Convert grams to kilograms
Converting grams to kilograms is a common weight task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 g equals 0.001 kg, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert grams to kilograms
To convert grams to kilograms, multiply the number of grams by 0.001. For example, 10 g × 0.001 = 0.01 kg.
kg = g × 0.001
- Write down the value in grams you want to convert.
- Multiply it by 0.001 (the exact g→kg factor).
- The result is your value in kilograms. Check it below with the converter or the table.
Conversion table
Common values of grams and their equivalents in kilograms:
| g | kg |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
About these units
Gram (g). The gram is the metric unit for everyday small masses, defined as one thousandth of a kilogram. Recipes, nutrition labels and postage are commonly specified in grams.
Kilogram (kg). The kilogram is the SI base unit of mass, defined by fixing Planck's constant since 2019. It is the everyday standard for body weight, groceries and cargo worldwide.
Frequently asked questions
How do I convert grams to kilograms?
To convert grams to kilograms, multiply the number of grams by 0.001. For example, 10 g × 0.001 = 0.01 kg. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many kilograms are in 1 gram?
1 g = 0.001 kg. That is the fixed relationship used by this converter and by international standards.
How many grams are in 1 kilogram?
1 kg = 1,000 g. If you are converting in the opposite direction, use our Kilogram to Gram converter for the dedicated table and FAQ.
Is the grams to kilograms conversion exact?
Yes. Both units are defined by international agreement, so the factor of 0.001 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is gram used for?
The gram is the metric unit for everyday small masses, defined as one thousandth of a kilogram. Recipes, nutrition labels and postage are commonly specified in grams.