Grams to Kilograms Converter
Convert grams to kilograms instantly. One gram equals exactly 0.001 kilograms. Type in either box to convert both ways, then use the chart, worked examples and everyday sizes below.
How to convert grams to kilograms
Worked example: convert 15 grams to kilograms. Using kilograms ← grams ÷ 1,000, we get 15 × 0.001 = 0.015 kg. To check the result, convert back: 0.015 kg ÷ 0.001 = 15 g.
Grams to kilograms chart
| Grams (g) | Kilograms (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 |
| 8 g | 0.008 kg |
| 10 g | 0.01 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 |
| 150 g | 0.15 kg |
| 200 g | 0.2 kg |
| 250 g | 0.25 kg |
| 500 g | 0.5 kg |
| 1,000 g | 1 kg |
Kilograms to grams (reverse)
| Kilograms (kg) | Grams (g) |
|---|---|
| 1 kg | 1,000 g |
| 2 kg | 2,000 g |
| 5 kg | 5,000 g |
| 10 kg | 10,000 g |
| 20 kg | 20,000 g |
| 50 kg | 50,000 g |
| 100 kg | 100,000 g |
| 250 kg | 250,000 g |
| 500 kg | 500,000 g |
| 1,000 kg | 1,000,000 g |
About the gram and the kilogram
The gram is one thousandth of a kilogram and the everyday unit for cooking ingredients, nutrition labels and postal weights of small items. A paperclip weighs about one gram.
The kilogram is the SI base unit of mass. Since May 2019 it has been defined using the Planck constant instead of the old platinum-iridium cylinder kept near Paris. It is used for body weight and groceries in most countries.
One kilogram equals 1,000 grams, which makes the kilogram the heavier unit of the two.
Everyday sizes in grams and kilograms
| Everyday example (approximate) | In grams | In kilograms |
|---|---|---|
| A US stick of butter | 113 g | 0.113 kg |
| A smartphone | 190 g | 0.19 kg |
| A liter of water | 1,000 g | 1 kg |
| A newborn baby | 3,400 g | 3.4 kg |
| A bowling ball (maximum) | 7,260 g | 7.26 kg |
| An average adult | 75,000 g | 75 kg |
Grams to kilograms FAQ
How many kilograms are in one gram?
One gram equals exactly 0.001 kilograms. In the other direction, one kilogram equals 1,000 grams.
How do I convert grams to kilograms without a calculator?
convert 15 grams to kilograms. Using kilograms ← grams ÷ 1,000, we get 15 × 0.001 = 0.015 kg. To check the result, convert back: 0.015 kg ÷ 0.001 = 15 g. For a quick estimate, round the factor to 0.001. Then 15 g is about 0.015 kg, compared with the exact 0.015 kg (an error of 0%). That is close enough for planning, but use the calculator above when the number matters.
What is a bowling ball (maximum) in kilograms?
A bowling ball (maximum) is about 7,260 grams, which is 7.26 kilograms. Treat that as an approximate everyday figure rather than an official measurement.
Are the grams and kilograms the same in every country?
The gram is exactly 0.001 kg. The kilogram is defined from the Planck constant, so it is the same everywhere.