Grams to Kilograms Converter (g to kg)

How to use this calculator: grams to kg

1. 1Enter the value measured in gram (g).
2. 2Confirm the direction is Gram (g) to Kilogram (kg); reversing the units changes the factor or offset.
3. 3Apply kg = g × 0.001. The live converter performs this substitution as you type.
4. 4Read the answer in kg and keep only justified precision.

Conversion formula

To convert grams to kilograms, divide by 1,000. Food labels, postage rates and shipping documents often mix the two, so the same mass appears as 500 g or 0.5 kg.

The units measure the same quantity at different scales: 1 g = 0.001 kg, and 1 kg = 1,000 g.

Worked conversion example: Grams to Kilograms

1. Given: 250 g
2. Substitute: kg = 250 × 0.001 = 0.25
3. Result: 250 g = 0.25 kg

Accuracy checklist

The converter keeps extra precision internally. Report only the precision supported by the original measurement and follow the required rounding rule.

Direction check: a smaller unit usually gives a larger number; temperature is an exception.

Unit definitions and SI traceability: NIST Office of Weights and Measures — SI Units.