Grams to Kilograms
A gram is one thousandth of a kilogram, used for cooking ingredients and other small everyday objects. The kilogram is the SI base unit of mass, defined today by the fixed value of the Planck constant. 1 g equals 0.001 kg, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to mass, measured here against mass's base unit (kg) — every other mass unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
kg = g × 0.001
g = kg × 1,000
Worked example: 5 g × 0.001 = 0.005 kg.
Conversion table
| Gram (g) | Kilogram (kg) |
|---|---|
| 1 g | 0.001 kg |
| 2 g | 0.002 kg |
| 3 g | 0.003 kg |
| 5 g | 0.005 kg |
| 10 g | 0.01 kg |
| 20 g | 0.02 kg |
| 25 g | 0.025 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 |
Frequently asked
- How many Kilograms in a gram?
- 1 g equals 0.001 kg.
- How do I convert Grams to Kilograms?
- Multiply the value in g by 0.001 to get kg. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Gram and Kilogram are both defined by a fixed conversion factor to mass's base unit (kg), so the result shown is exact to the precision displayed, not an approximation.