Kilograms to Grams Converter
Convert kilograms to grams instantly. One kilogram equals exactly 1,000 grams. Type in either box to convert both ways, then use the chart, worked examples and everyday sizes below.
How to convert kilograms to grams
Worked example: convert 120 kilograms to grams. Using grams ← kilograms × 1,000, we get 120 × 1,000 = 120,000 g. To check the result, convert back: 120,000 g ÷ 1,000 = 120 kg.
Kilograms to grams chart
| Kilograms (kg) | Grams (g) |
|---|---|
| 1 kg | 1,000 g |
| 2 kg | 2,000 g |
| 3 kg | 3,000 g |
| 4 kg | 4,000 g |
| 5 kg | 5,000 g |
| 6 kg | 6,000 g |
| 8 kg | 8,000 g |
| 10 kg | 10,000 g |
| 12 kg | 12,000 g |
| 15 kg | 15,000 g |
| 20 kg | 20,000 g |
| 25 kg | 25,000 g |
| 30 kg | 30,000 g |
| 40 kg | 40,000 g |
| 50 kg | 50,000 g |
| 75 kg | 75,000 g |
| 100 kg | 100,000 g |
| 150 kg | 150,000 g |
| 200 kg | 200,000 g |
| 250 kg | 250,000 g |
| 500 kg | 500,000 g |
| 1,000 kg | 1,000,000 g |
Grams to kilograms (reverse)
| Grams (g) | Kilograms (kg) |
|---|---|
| 1 g | 0.001 kg |
| 2 g | 0.002 kg |
| 5 g | 0.005 kg |
| 10 g | 0.01 kg |
| 20 g | 0.02 kg |
| 50 g | 0.05 kg |
| 100 g | 0.1 kg |
| 250 g | 0.25 kg |
| 500 g | 0.5 kg |
| 1,000 g | 1 kg |
About the kilogram and the 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.
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.
One kilogram equals 1,000 grams, which makes the kilogram the heavier unit of the two.
Everyday sizes in kilograms and grams
| Everyday example (approximate) | In kilograms | In grams |
|---|---|---|
| A US stick of butter | 0.113 kg | 113 g |
| A smartphone | 0.19 kg | 190 g |
| A liter of water | 1 kg | 1,000 g |
| A newborn baby | 3.4 kg | 3,400 g |
| A bowling ball (maximum) | 7.26 kg | 7,260 g |
| An average adult | 75 kg | 75,000 g |
Kilograms to grams FAQ
How many grams are in one kilogram?
One kilogram equals exactly 1,000 grams. In the other direction, one gram equals 0.001 kilograms.
How do I convert kilograms to grams without a calculator?
convert 120 kilograms to grams. Using grams ← kilograms × 1,000, we get 120 × 1,000 = 120,000 g. To check the result, convert back: 120,000 g ÷ 1,000 = 120 kg. For a quick estimate, round the factor to 1,000. Then 120 kg is about 120,000 g, compared with the exact 120,000 g (an error of 0%). That is close enough for planning, but use the calculator above when the number matters.
What is a newborn baby in grams?
A newborn baby is about 3.4 kilograms, which is 3,400 grams. Treat that as an approximate everyday figure rather than an official measurement.
Are the kilograms and grams the same in every country?
The kilogram is defined from the Planck constant, so it is the same everywhere. The gram is exactly 0.001 kg.