What is 1 grams to kg?

Type either value and the other one updates as you type.

Kilograms (kg): 0.001

1 g = 0.001 kg.

Kilograms (kg): 0.001. 1 g = 0.001 kg.

Kilograms (kg) by grams (g)

How to calculate

Converts grams (g) to kilograms (kg) and back, with the exact unit definitions.

Example with the default inputs (Grams (g) 1): 1 g = 0.001 kg.

Formula: kg = g × 0.001

1 gram = 0.001 kilograms, from the exact definitions in NIST SP 811.
The answer shows at most 6 decimal places; the calculation keeps full precision.

Machine-readable copies: Markdown, JSON.

Worked examples

Each example is checked against the calculator on every build.

Grams (g) 1 gives Kilograms (kg) 0.001.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
Grams (g) 500 gives Kilograms (kg) 0.5.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
Kilograms (kg) 0.5 gives Grams (g) 500.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8

Other questions people ask

What is 1 grams in kg?

1 g is 0.001 kg. The formula is kg = g × 0.001.

How many kilograms are in a gram?

1 gram is 0.001 kilograms, from the exact unit definitions (NIST SP 811).

How do I convert grams to kg?

Multiply by 0.001: kg = g × 0.001. For example, 1 g × 0.001 = 0.001 kg.

How do I convert kg back to grams?

Multiply by 1,000, or type the kilograms into the second box and the converter works it out. 1 kilogram is 1,000 grams.