How to convert grams to kilograms
kg = g × 0.001Multiply the value in grams by 0.001. To go the other way, multiply by 1,000 (or divide by 0.001).
A gram is smaller than a kilogram: it takes 1,000 grams to make one kilogram.
Worked examples
- 1 gram1 g × 0.001 = 0.001 kg
- 5 grams5 g × 0.001 = 0.005 kg
- 10 grams10 g × 0.001 = 0.01 kg
- 20 grams20 g × 0.001 = 0.02 kg
- 100 grams100 g × 0.001 = 0.1 kg
Grams to kilograms conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Grams (g) | Kilograms (kg) |
|---|---|
| 0.1 g | 0.0001 kg |
| 0.25 g | 0.00025 kg |
| 0.5 g | 0.0005 kg |
| 1 g | 0.001 kg |
| 2 g | 0.002 kg |
| 3 g | 0.003 kg |
| 4 g | 0.004 kg |
| 5 g | 0.005 kg |
| 6 g | 0.006 kg |
| 7 g | 0.007 kg |
| 8 g | 0.008 kg |
| 9 g | 0.009 kg |
| 10 g | 0.01 kg |
| Grams (g) | Kilograms (kg) |
|---|---|
| 12 g | 0.012 kg |
| 15 g | 0.015 kg |
| 20 g | 0.02 kg |
| 25 g | 0.025 kg |
| 30 g | 0.03 kg |
| 40 g | 0.04 kg |
| 50 g | 0.05 kg |
| 75 g | 0.075 kg |
| 100 g | 0.1 kg |
| 250 g | 0.25 kg |
| 500 g | 0.5 kg |
| 1,000 g | 1 kg |
About the units
Gram (g)
One thousandth of a kilogram. Recipes, nutrition labels and postal scales use grams; a US nickel weighs 5 g. One gram equals 0.001 kilograms (kg).
Kilogram (kg)
The SI base unit of mass, defined since 2019 through the Planck constant. A litre of water has a mass of almost exactly 1 kg.
Frequently asked questions
How many kilograms are in one gram?
There are 0.001 kilograms in one gram, and this value is exact by definition.
How do I convert grams to kilograms?
Multiply the number of grams by 0.001. For example, 10 g × 0.001 = 0.01 kg.
How many grams are in one kilogram?
One kilogram equals 1,000 grams. That is the reverse factor, 1 ÷ 0.001.
What is 10 grams in kilograms?
10 g = 0.01 kg.
Is this g to kg converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.