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Convert grams to kilograms
Instant, accurate g → kg conversion with a live converter, table and formula.
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1 gram = 0.001 kilograms
1 kilogram = 1000 grams
grams to kilograms table
| grams (g) | kilograms (kg) |
|---|---|
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
Formula
kilograms = grams × 0.001.
Example
10 grams = 0.01 kilograms.
What is a gram?
A gram (g) is one-thousandth of a kilogram; a paperclip weighs about 1 g.
What is a kilogram?
The kilogram (kg) is the SI base unit of mass; one liter of water weighs about 1 kg.
Real-world reference points
A kilogram is a liter of water; a pound is a loaf of bread; an ounce is a slice of it.
| Reference | grams | kilograms |
|---|---|---|
| Smartphone | 180 g | 0.18 kg |
| Liter of water | 1,000 g | 1 kg |
| Newborn baby (average) | 3,300 g | 3.3 kg |
| Airline checked-bag limit (common) | 23,000 g | 23 kg |
| Cement bag (standard) | 50,000 g | 50 kg |
Mistakes to avoid with mass conversions
- Confusing weight ounces with fluid ounces — one measures mass, the other volume.
- Reading 'stone and pounds' (11 st 6 lb) as decimal stone (11.6 st) — they differ.
- Comparing net vs gross weight when shipping: the box and padding count toward limits.
Frequently asked questions
How many kilograms in a grams?+
1 gram = 0.001 kilograms.
How do I convert grams to kilograms?+
Enter the value in the grams box above and the kilograms value appears instantly. You can also type in the kilograms box to convert the other way.
Is this g to kg converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.