Gram to Kilogram Converter
One Gram equals 0.001 Kilogram (1 g = 0.001 kg). Multiply a Gram value by 0.001 to get the equivalent in Kilogram. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
kg = g × 0.001
Multiply the Gram value by 0.001 to get the equivalent value in Kilogram.
Example Conversions
1 Gram (g)
0.001 Kilogram (kg)
5 Gram (g)
0.005 Kilogram (kg)
10 Gram (g)
0.01 Kilogram (kg)
25 Gram (g)
0.025 Kilogram (kg)
100 Gram (g)
0.1 Kilogram (kg)
Conversion Table
| Gram (g) | Kilogram (kg) |
|---|---|
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
How to Convert Manually
Use these steps to convert Gram values to Kilogram without the calculator.
- Write down the value in Gram (g) that you want to convert.
- Multiply that value by 0.001.
- For example, 10 Gram × 0.001 = 0.01 Kilogram.
- Label the result as Kilogram (kg).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Gram and one Kilogram.
About Gram and Kilogram
The gram is one thousandth of a kilogram. Recipes, nutrition labels, and postal scales work in grams because the kilogram is too coarse for them. The kilogram is the SI base unit of mass, defined since 2019 by fixing the Planck constant rather than by the old platinum-iridium prototype. It is the reference for every other mass unit on this site. One Gram equals 0.001 Kilogram (1 g = 0.001 kg). Gram to Kilogram conversion comes up most often in cooking and baking recipes and in nutrition labels, typically when figures need restating for body weight outside the US.
Precision and Rounding: Metric-imperial mass factors are exact (1 lb = 0.45359237 kg by the 1959 agreement), so precision is purely a display choice. One decimal place is enough for body weight and cooking; nutrition labeling, pharmacy, and lab work need the full factor before rounding.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Gram equals 0.015 Kilogram.
15 g × 0.001 = 0.015 kg
FAQ
How do I convert Gram to Kilogram?
Multiply the Gram value by 0.001 to get the equivalent value in Kilogram.
What is the formula for Gram to Kilogram?
The formula is kg = g × 0.001.
How many Kilogram are in 1 Gram?
1 Gram equals 0.001 Kilogram.
Can I convert Kilogram back to Gram?
Yes. 1 Kilogram equals 1000 Gram, and the related converter can reverse the calculation.
What are common names for Gram and Kilogram?
Gram is shown as g and may also be searched as grams, gramme, grammes. Kilogram is shown as kg and may also be searched as kilograms, kilo, kilos.
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