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1 milligram [mg] = 0.001 gram [g]

Initial value

Converted value

kilogram grams of exagrams petagrams teragrams gigagrams megagrams hectograms decagrams decigrams centigrams milligrams micrograms nanograms picograms femtograms attograms daltons, atomic mass unit kilogram-force sq. sec / meter kilopound kilopound (kip) slug lbf sq. sec / ft lb troy pound ounce troy ounce metric ounce short ton long (imperial) ton assay ton (US) assay ton (imperial) ton (metric) kilotone (metric) centner (metric) centner American centner British quarter (US) quarter (brit.) stone (USA) stone (brit.) ton pennyweight scrupul carat grand gamma talent (dr. Israel) mina (dr. Israel) shekel (dr. Israel) bekan (dr. Israel) gera (dr. Israel) talent (Ancient Greece) mina (Ancient Greece) tetradrachm (Ancient Greece) didrachma (Ancient Greece) drachma (Ancient Greece) denarius (Ancient Rome) ass (Ancient Rome) codrant (Ancient Rome) lepton ( Dr. Rome) Planck mass atomic mass unit electron rest mass muon rest mass proton mass neutron mass deuteron mass Earth mass mass of the Sun berkovets pood Pound lot spool fraction of quintal livre

More about mass

General information

Mass is the property of physical bodies to resist acceleration. Mass, unlike weight, does not change depending on the environment and does not depend on the force of gravity of the planet on which this body is located. Mass m determined using Newton's second law, according to the formula: F = ma, where F is power, and a- acceleration.

Mass and weight

In everyday life, the word "weight" is often used, when they speak of mass. In physics, weight, in contrast to mass, is a force acting on a body due to the attraction between bodies and planets. Weight can also be calculated using Newton's second law: P= mg, where m is mass, and g- acceleration of gravity. This acceleration occurs due to the gravitational force of the planet, near which the body is located, and its magnitude also depends on this force. The acceleration due to gravity on Earth is 9.80665 meters per second, and on the Moon - about six times less - 1.63 meters per second. So, a body weighing one kilogram weighs 9.8 Newtons on the Earth and 1.63 Newtons on the Moon.

Gravitational mass

Gravitational mass shows what gravitational force acts on a body (passive mass) and with what gravitational force a body acts on other bodies (active mass). When increasing active gravitational mass body, its force of attraction also increases. It is this force that governs the movement and position of stars, planets and other astronomical objects in the universe. The ebb and flow are also caused by the gravitational forces of the Earth and the Moon.

With magnification passive gravitational mass the force with which the gravitational fields of other bodies act on this body also increases.

Inert mass

Inertial mass is the property of a body to resist motion. It is due to the fact that a body has mass that a certain force must be applied to move the body from its place or change the direction or speed of its movement. The more inert mass, the more force you need to apply for this. Mass in Newton's second law is precisely inert mass. The gravitational and inert masses are equal in magnitude.

Mass and the theory of relativity

According to the theory of relativity, gravitating mass changes the curvature of the space-time continuum. The greater this mass of a body, the stronger this curvature around this body, therefore, near bodies of large mass, such as stars, the trajectory of light rays is curved. this effect in astronomy is called gravitational lenses. On the contrary, far from large astronomical objects (massive stars or their clusters called galaxies), the movement of light rays is straightforward.

The main postulate of the theory of relativity is the postulate of the finiteness of the speed of propagation of light. Several interesting consequences follow from this. First, one can imagine the existence of objects with such a large mass that the second cosmic speed of such a body will be equal to the speed of light, i.e. no information from this object can get into the outside world. Such space objects in the general theory of relativity are called "black holes" and their existence has been experimentally proven by scientists. Secondly, when an object moves with a near-light speed, its inertial mass increases so much that the local time inside the object slows down in comparison with time. measured by a stationary clock on Earth. This paradox is known as the "twins paradox": one of them is sent into space flight at a near-light speed, the other remains on Earth. Upon returning from a flight twenty years later, it turns out that the twin astronaut is biologically younger than his brother!

Units

Kilogram

In SI, mass changes in kilograms. The kilogram is determined based on the exact numerical value of Planck's constant h equal to 6.62607015 × 10⁻³⁴, expressed in J s, which is equal to kg m2 s⁻¹, and the second and meter are determined by the exact values c and Δ ν Cs. The mass of one liter of water can be considered approximately equal to one kilogram. The derivatives of kilogram, gram (1/1000 kilogram), and ton (1000 kilograms) are not SI units, but are widely used.

Electron-volt

Electronvolt is a unit for measuring energy. It is usually used in the theory of relativity, and the energy is calculated by the formula E=mc², where E is energy, m- mass, and c is the speed of light. According to the principle of equivalence of mass and energy, the electron volt is also a unit of mass in the system of natural units, where c is equal to one, which means that mass is equal to energy. Electron volts are mainly used in nuclear and atomic physics.

Atomic mass unit

Atomic mass unit ( a. eat.) is intended for the masses of molecules, atoms, and other particles. One A. e. m is equal to 1/12 of the mass of an atom of a carbon nuclide, ¹²C. This is approximately 1.66 × 10 ⁻²⁷ kilograms.

Slug

Slags are used mainly in the British imperial system of measures in the UK and some other countries. One slug is equal to the mass of a body that moves at an acceleration of one foot per second per second when a force of one pound-force is applied to it. This is approximately 14.59 kilograms.

Solar mass

Solar mass is a measure of mass used in astronomy to measure stars, planets, and galaxies. One solar mass is equal to the mass of the Sun, that is, 2 × 10³⁰ kilograms. The mass of the Earth is about 333,000 times less.

Carat

Carats measure the mass of precious stones and metals in jewelry. One carat is equal to 200 milligrams. The name and the value itself are associated with the seeds of the carob tree (in English: carob, pronounced "carob"). One carat used to be equal to the weight of the seed of this tree, and buyers carried their seeds with them to check if the sellers of precious metals and stones had cheated them. Gold coin weight in Ancient rome was equal to 24 carob seeds, and therefore carats began to be used to denote the amount of gold in the alloy. 24 carats is pure gold, 12 carats is a half-gold alloy, and so on.

Gran

The gran was used as a measure of weight in many countries before the Renaissance. It was based on the weight of grains, mainly barley, and other popular crops at the time. One grain is equal to about 65 milligrams. This is a little over a quarter of a carat. Until carats became widespread, grains were used in jewelry. This weight is still used today to measure the mass of gunpowder, bullets, arrows, and gold foil in dentistry.

Other units of mass

In countries where the metric system is not adopted, the measures of mass of the British imperial system are used. For example, in the UK, USA and Canada, pounds, stones and ounces are widely used. One pound equals 453.6 grams. Stones are mainly used only to measure a person's body weight. One stone is approximately 6.35 kilograms, or exactly 14 pounds. Ounces are mostly used in cooking recipes, especially for small portions. One ounce is 1/16 of a pound, or approximately 28.35 grams. In Canada, which formally converted to metric in the 1970s, many products are sold in rounded imperial packaging, such as one pound or 14 fluid ounces, but have metric weights or volumes. In English, this system is called "soft metric" (eng. soft metric), in contrast to the "rigid metric" system (eng. hard metric), which indicates the rounded weight in metric units on the packaging. This image shows “soft metric” food packaging, showing weight in metric only and volume in both metric and imperial units.

Do you find it difficult to translate a unit of measurement from one language to another? Colleagues are ready to help you. Post a question to TCTerms and you will receive an answer within a few minutes.

We often forget that we went to school and took a course physical quantities and their units of measurement. Many do not even know: how many milligrams are in a gram, and vice versa.

Why is this so important?

Let's, for a start, figure it out: where it is necessary to know (without fail), and how knowledge about grams and milligrams can someday be useful in the life of each of us.

Medicine and industry

This knowledge is simply indispensable when it comes to medical dosages, industrial and cosmetic proportions. Moreover, if we talk about medicine, then there is no way to be frivolous about values. After all, the lives of millions of people depend on this! The same is true in industry where precision is important. Imagine if an employee of an arms factory did not know how many milligrams are in one gram of gunpowder. It's scary to even speculate about what can happen due to the lack of knowledge about grams and milligrams.

In medicine, due to an error in the proportions of active substances, a medicine can become a deadly poison, even if half a milligram is superfluous or insufficient!

Unfortunately, there are more and more modern people who do not even know about the conversion (translation) of physical quantities. Probably, it is no longer a secret that such people can and have already ended up in the medical or industrial sphere, where one cannot do without it. There are also those who confidently say: "There are one hundred milligrams in one gram." This applies not only to mass, but also to knowledge about other quantities. And who knows where they work? Such mistakes are fraught with accidents and disasters.

In SI, only kilograms are used for calculations. Even a small amount of mass is converted to kg. For example, 123 grams should be written as 0.123 kg.

Thanks to those people who are fluent in translations of units of measurement of physical quantities, we are alive and have the opportunity to heal diseases, use other substances to make our own life easier. Pharmacists, for example, know how to dose drugs correctly. Chemists who develop pesticides and fertilizers receive effective preparations so that the harvest is good and pests do not destroy crops. They, like no one else, know how many mg are in 1 gram.

Life situations

Probably, you have often heard from children who go to school, for example, the following words: “Why should I know this? I will be a policeman, and this will not be useful to me in my life! " In fact, it will come in handy.

Let's say you have to give an old grandmother a medicine. The instructions say that you need to take 250 mg twice a day. 250, no more and no less! Otherwise, the drug will begin to act incorrectly, cause side effects, or even an overdose. On the box with tablets there is an inscription: "The package contains 50 tablets of 1 g of active substance". In the instructions, they do not write that it is necessary to break the pill into exactly four parts, but they write that you should take 250 milligrams each. As you can see, you need to know: how many milligrams are in one gram.

Or, cases with fertilizers, which are sometimes packaged in several grams. For example, a sachet contains one gram of powder. To fertilize, say, an indoor flower, you need to dilute 500 milligrams in 200 milliliters of water. Again, they did not write that the half of the sachet should be diluted, namely 500 mg.

Hunting, the same case with gunpowder. Let's come up with a situation. A person does not buy ready-made cartridges, but loads them on his own. Takes a kilogram of gunpowder. You need to pour into the cartridge, for example, 2.25 g. It has an accurate scale that shows only in milligrams. He sits and thinks: "What should a milligram scale show me so that I would fall asleep in a cartridge of 2.25 grams?" It would be appropriate to know that the required mass of gunpowder should be 2250 milligrams on its scales. Of course, you can use special programs.

Such cases can be cited as examples endlessly. There is only one conclusion from this: whether you work in the precision industry or not, you should have knowledge of units of measurement in your head. It will come in handy anyway.

How to calculate

Now let's figure it out: how many mg are in 1 gram and vice versa. First of all, it is worth remembering that there are 1000 milligrams in one gram. And 1 milligram is one thousandth of a gram. That is, 1 mg is 0.001 g and 1 g is 1000 mg.

The main thing is not to be mistaken with zeros and correctly carry the comma of decimal fractions:

• 1 gram = 1000 milligrams;
• 10 grams = 10,000 milligrams;
• 5 milligrams = 0.005 grams;
• 50 milligrams = 0.05 grams;
• 500 milligrams = 0.5 (half) grams.

Now we know how many milligrams 1 gram is. And if on the contrary, then you need to deal with decimal fractions. One zero is one decimal place transfer. If we want to write 1 milligram as grams, we get 0.001.

1 milligram is one thousandth of a gram. We divide 1 by a thousand, that is, we transfer the comma to the left by three digits, since there are three zeros in a thousand. 10 milligrams is one hundredth of a gram (for two digits). 100 milligrams is one tenth (one digit).

For example, you have 24 milligrams. In grams, it looks like this: 0.024 g. 24 divided by a thousand. If from grams to milligrams, then zeros are added accordingly. 356 grams is 356,000 mg.

Easier to work with comma hyphenation. It's faster this way and you can never go wrong.

Practical calculation - video

When we finish training, we often forget a lot of what we went through in the program. For example, not everyone remembers how many milligrams are in a gram. However, this knowledge is sometimes simply necessary in Everyday life... For example, the correct dosage of various components in cooking, medicine, and cosmetology often depends on how well we have mastered the system for converting mass from kilogram to grams, from gram to milligrams. Taking it lightly can easily ruin the result. After all, it is much easier to figure out how much and where to add, knowing how many milligrams are in a gram. Small values ​​are often used when working with small volumes of substances, and it is very important not to mix up the ratio. Even on the Internet, you can sometimes find statements that confidently say that a gram contains 100 milligrams. But it is quite possible that after reading such a post, the other person will simply make a mistake with the calculations. So how many milligrams are in a gram? And how to make the calculations correctly?

A milligram is a thousandth of a gram. The value of the prefix "milli" means 10 to the -3 power, respectively, indicates one thousandth. That is, one gram consists of one thousand milligrams. In fact, translating these values ​​is not difficult at all, even without a calculator. To do this, it is enough to use the most elementary knowledge of arithmetic.

In order to make it easier to understand how many milligrams are in 1 gram, I will present an illustrative example:

1 gram equals 1,000 milligrams

And vice versa:

1 milligram will be equal to 0, 001 grams

It follows that:

1 kilogram will be equal to 1,000 grams, which equals 1,000,000 milligrams

With the help of such a simple table, you can correctly calculate the amount of substances.

Knowing how many milligrams are in one gram is necessary if you want to correctly follow the recipes for various cosmetics and medicines. After all, situations often arise when we can completely figure out all the subtleties and nuances on our own, however, ignorance of how many milligrams are in a gram and a well-founded uncertainty about the correctness of calculations makes it difficult to find rational decision.

Suppose you need to give medicine to a small child. But it is known that the dosage of some drugs is quite strictly different in adults and babies. In this case, the most difficult thing is to find the necessary dose that will not cause any side effects and negative health effects for very young children up to three years old. Having a whole pill and knowing its standard weight, as well as the amount of active ingredient, you can easily do this. For example, it looks like this.

Tablet weight - 500 milligrams. The pediatric dose of this drug is 0.25 grams. Hard? Not at all. One has only to use an elementary school formula, as everything will fall into place. You can use two different conversion methods - from grams to milligrams or vice versa. Here's what you get as a result:

500 milligrams = 0.5 grams. And you only need 0.25. We divide the pill into two parts and get the required dose of the required medicine.

You can do the other way around:

0.25 grams = 250 milligrams

The result is two digits - 500 milligrams and 250 milligrams. And now it's much easier to figure out how to split the pill properly.

I will give a few more examples of converting grams to milligrams and vice versa.

0.12 grams = 120 milligrams.

540 milligrams = 0.54 grams

0.03 grams = 30 milligrams

36 milligrams = 0.036 grams

Here's how you can easily deal with such obscure quantities. There is no need to divide or multiply if you correctly understand the number of zeros. In the version with 540 milligrams, 0.54 grams can be obtained by simply moving the separating comma forward three digits, which means three zeros in 1000. Don't you forget that there are 1000 milligrams in one gram? And in the case of translating 0.03 grams into milligrams, the comma moves three digits back and the missing zero is added. 0.030 = 30.

In everyday life, we very often have to deal with the measurement of weight, be it our own weight or the purchased product. However, most often these are kilograms and grams. And in very rare cases, milligrams. Despite the seeming simplicity of the question, not every person can immediately remember how many milligrams are in a gram. Although very often his life depends on the correct answer to this question.

What unit of measurement is called a gram

Before remembering how many milligrams are in a gram, it is worth brushing up on the knowledge of a gram. So, gram is the SI unit used to define mass. Its homeland is France, hence the melodic name gramme.

The gram as a unit of measurement was introduced into use in the last decade of the eighteenth century.

By weight, it is equal to 0.001 kilograms, (0.000001 tons, 0.00001 centners) in other words, one kilogram contains a thousand grams.

The gram is denoted with the letter "g" in the Cyrillic alphabet and the letter g in the Latin alphabet.

Like other SI units, grams are used to measure weight in science, technology and everyday life in most countries in Europe and the world. However, in the United States and some other countries, the old-fashioned weight is measured in pounds, which is approximately 0.45 kilograms. As in the old days, some countries have their own numerical equivalent of the pound, which is why confusion arises when converting to SI. Due to this situation, countries using pounds are gradually starting to switch to kilograms.

An interesting fact, Russia also had its own pound, and it was slightly heavier than the modern one.

In the system of measuring weight in pounds, there is also a kind of analogue of the gram - ounce (oz). It is equal in weight to 28.4 grams.

How many milligrams are in one gram

Kilograms, centners and tons are units of measurement that are larger than a gram. But there are also those that are smaller than him, the so-called "fractional units". These include milligram (mg-mg), microgram (mcg-mkg), nanogram (ng-ng), and pictograms (pg-pg). In addition to the milligram, all others are rarely used in everyday life, since there is no special need, and to measure them, supersensitive scales are needed, which are not cheap.

The answer to the question of how many milligrams are in 1 gram is the number 1000, that is, one gram consists of a thousand milligrams, or 0.001 grams in one milligram.

Why you need to know how many milligrams are in a gram

A milligram is a tiny measure of weight that at first glance seems unsuitable for measuring anything with it in everyday life. After all, no one will measure sugar or cereals in milligrams.

However, if a person feels unwell and needs medication, starts calculating the required dosage of the drug, then he will immediately understand why it is important to know how many milligrams are in a gram. Indeed, many drugs are prescribed in relation to the patient's weight. And if a sick child or teenager, then the dose of the medicine should be small, most often less than a gram, so you need to clearly understand the ratio of grams / milligram, otherwise you can cause irreparable harm to your health.

For example, on vacation, a child was bitten by a bee, the bitten place is swollen, which means that it is necessary to take an antihistamine. However, in the first-aid kit, this medicine is only available in tablets. After reading the instructions carefully, you can understand that one tablet weighs 1 gram, but children weighing up to 10 kilograms can be given no more than 250 milligrams of the drug at a time. With knowledge of the milligram, you can easily calculate the permissible dose: 1 g = 1000 mg, 1000/250 = 4, it turns out that the child can only be given a quarter of the tablet at a time.

V last years it has become fashionable to prepare do-it-yourself skin care products.
Making so-called soap from scratch became especially popular. Despite the simplicity of the process, it is important to follow the dosage exactly, otherwise you may get burned. After all, if it is incorrect to calculate the proportion of oils and caustic soda, then either the soda will not all interact with the oils and the rest of it will get on the skin when using soap; or there will be too much oil and the soap will not clean well.

Milligram and milliliter

Analyzing the topic of milligrams, one cannot but mention the milliliter (ml). They are very often confused. It is worth remembering that weight is measured in milligrams, and volume is measured in milliliters. So the liquid is measured only in milliliters, and the scale of division of the syringes is milliliter, not milligram.

Pills and powders are always measured in milligrams.

These two measures are equal in some cases; in other situations, you need to know the density of the measured liquid in order to accurately calculate its weight.

Almost every day when making purchases in the store, people have to convert kilograms to grams and vice versa, so this skill is brought to automatism. In the case of grams and milligrams, this is all done in a similar way. Therefore, having assimilated how many milligrams are in a gram, you can then, if necessary, carry out these calculations yourself.

How to convert grams to kilograms?

Before converting grams into kilograms, you need to clearly understand that there are 1000 grams in one kilogram, and then everything is simple. If you want to know how many grams are in five kilograms, then, accordingly, you need to multiply by five. So the question was in the explanation. If, on the contrary, grams need to be converted into kilograms, then the number of grams must be divided by 1000.

It is most convenient to simply transfer the comma to three digits and you will get the required value in kilograms. Example: you have 757 grams, we transfer the comma, we get 0.757 kg. It's all very simple.

At school, our teacher liked to talk to those who could not translate grams into kilograms and so on.

• you will not teach now, go to the sawmill there you will be quickly taught how to convert cubic meters to liters.

What is most interesting is that some have taken up forestry and are now converting cubic meters into money.

The prefix KILO that's what the order means: multiply by 10 to the third power. Accordingly, in a kilogram 1000 grams.

And in practice: when you come to the store, you say how much you weigh, for example, 300, 500, 700 grams, and the next step is a kilogram. Yes, and 500 grams is easier to say half a kilo.

In the end, proceed by analogy: there are 1000 meters in a kilometer.

For some, this question may seem ridiculous, but do not forget that we all learn something a little, therefore, for a student of an elementary (and maybe even a secondary 6-))) school, such a question is quite relevant. Therefore, I will try to give an answer that is clear to everyone.

Take the example of a vendor who sells strawberries in the market. The berries are ripe, different in size, delicious…. I just want to buy them! He has a price tag written on the oltka: 250 rubles-1 kg. Let's try to figure out how much it is in grams and how much we can buy strawberries for 100 rubles, which our parents gave us.

In one kilogram (1 kg.), According to the accepted smart people measure of mass, exactly one thousand grams (1000 g). That is, 1000 grams costs 250 rubles. Or 1 kg = 1000 g. But we have only 100 rubles, how many strawberries can you buy with this money and how can you convert grams into kilograms? To do this, first we will try to understand how to express how much 1 gram will be in kilograms.




Let's look at the expression: 1 kg = 1000 g. And imagine that we need 1 g. Then the expression will look like this: 1 g = 0.001 kg. That is, we transfer three zeros forward. But since it turns out that we only have a part of something larger, then a comma is required before the first zero to show that 1 g in relation to 1 kg is some small part of it.

In the same way, let's try to imagine that we need to convert 10 g into kilograms.

10g = 0.01kg. Accordingly, 100 g = 0.1 kg.

That is, 1 gram is the thousandth part of 1 kilogram. And in order to convert grams into kiolgrams, we need to divide the number of grams required for translation by a thousand, or multiply by 0.001 (this is just the same thing).

1) let's convert 250 grams to kilograms.

2) let's translate 999 grams into kilograms:

And lastly, the promised. How many strawberries, we can buy for 100 rubles, if a kilogram costs 250. I always solve such problems using the cross method , as I was taught))

250 r = 1000 g (or 1 kg.)

100 p =? g (or? kg.)

To do this, 100 * 1000 (or 1) and divide by 250

we get 100 * 1000 = 100000/250 = 400 grams

100 * 1/250 = 0.4 kg.

To correctly answer the question of how to convert grams to kilograms, you must first determine how many grams ( G) in kilogram ( Kg).

To begin with, a little information about what gram is:




Now let's see what kilogram means:

Thus, we get the answer to our question - there are exactly one thousand grams in one kilogram (1 kg = 1000 g), that is, a gram is one thousandth of a kilogram.

Accordingly, in order to convert grams to kilograms, you need to divide this number in grams by a thousand.

For example:

1 g = 0.001 kg

10 g = 0.01 kg

100 g = 0.1 kg.

The same example in international units:

Most likely everyone knows that there are a thousand grams in a kilogram, and from this it follows that one gram is one thousandth of a kilogram. Therefore, the number of grams must be divided by one thousand, and you will get the result you need.

Example: 20gr: 1000gr = 0.02 kg.

Or 3 gr: 1000 gr = 0.003 kg.

There are 1000 grams in one kg, to convert grams to kilograms, you need to divide the grams by 1000.

When converting a gram to a kilogram, remember that a gram is one thousandth of a kilogram. Hence the right number must be divided by 1000.

For example, 50 g = 50: 1000 = 0.05 kg.

As already noted in other answers to the question, to simplify the task, you need to remember that division by 1000 is the transfer of a comma by 3 digits (the number of zeros) forward:

50g can be written like 50.0

Now portability this comma to the left and we get 0.050 = 0.05.




Multiple prefix kilo means multiply by 10 ^ 3, that is, 1000 times.

That is, in kilo-chm, a thousand of this something. There are a thousand meters in a kilometer, a thousand grams in a kilogram. Even here, on BV, user reputation is denoted by the numbers 17.7K - which means 17700 rounded to the nearest hundred.

It turns out that in order to convert grams into kilograms, you need to divide them by a thousand: 500 g / 1000 = 0.5 kg, half a kilo.

To do this, you just need to divide the number of grams by 1000 and it will turn out in kilograms. Indeed, there are a thousand grams in one kilogram. To divide by 1000, just move the comma by 3 characters.

For example:

Given 3 grams.

We carry over the comma and get 0.003

in one kilogram 1000 grams. for example, to find out how many kg are in 5000 grams, you need to divide 5000 by 1000

If you have a figure that gives information about the mass of an object in grams, and you need to know how much it will be in kilograms, you need to divide the original number by a thousand, since there are a thousand grams in one kilogram. Otherwise, converting from kilograms to grams, the seed is multiplied by one thousand.




I will not repeat myself that I am mistaken for a gram or a kilogram.

I am among the last to answer, so repetition is possible.

Students easily convert kilograms to grams, for which they multiply this number by 1000, since there are 1000 grams in one kilogram. For example, 11 kg = 11 * 1000 = 11000 (g).

But they find it difficult to solve the inverse problem. By the way, the ninth graders with whom I tutor are no exception. Apparently, that's why the question was asked.

I try to explain this fact in this way. You do not need to remember how to convert grams into kilograms, but you should pay attention to the following: if there are 1000 g in one kilogram, i.e. 1 kg is 1000 times more than 1 gram, then 1 gram will be 1000 times less than 1 kilogram... Students primary school must be able to solve such problems (n times less, so we divide by this number n).

We have, 1 g = 0.001 kg.

It turns out the rule:

To convert grams into kg, or rather the number written in grams, to represent in kilograms, it is necessary and sufficient to divide this number by 1000 or multiply by 0.001.

Mathematicians will understand me why I use the term necessary and sufficient.

I would like to clarify. Many authors here advise for this move commas by 3 characters, not write to the right or to the left. And this is very important. Because moving it 3 digits to the right, we multiply the number by 1000, not 0.001. For example, 0.000125 * 1000 = 0.125.




In contrast, 0.000125 * 0.001 = 0.000000125

Thus, in order for the number presented in grams to be written in kilograms, it is necessary and sufficient to move the comma in this number by 3 digits to the left.

20 g = 0.0002 kg.

0.06 g = 0.00006 kg.

0.000007 g = 0.000000007 kg.

50,000 g = 0.0005 kg.

As you can see from the last example, when translating a comma after an integer part, the available tails from zeros in the record decimal are removed.