What is 1 kg to grams?
Type either value and the other one updates as you type.
- Grams (g)
- 1,000
1 kg = 1,000 g.
Grams (g): 1,000. 1 kg = 1,000 g.
Grams (g) by kilograms (kg)
How to calculate
Converts kilograms (kg) to grams (g) and back, with the exact unit definitions.
Example with the default inputs (Kilograms (kg) 1): 1 kg = 1,000 g.
Formula: g = kg × 1000 (the same as kg ÷ 0.001)
- 1 kilogram = 1000 grams, from the exact definitions in NIST SP 811.
- The answer shows at most 6 decimal places; the calculation keeps full precision.
Worked examples
Each example is checked against the calculator on every build.
- Kilograms (kg) 1 gives Grams (g) 1,000.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Kilograms (kg) 2.5 gives Grams (g) 2,500.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Grams (g) 2,500 gives Kilograms (kg) 2.5.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
Other questions people ask
What is 1 kg in grams?
1 kg is 1,000 g. The formula is g = kg × 1000 (the same as kg ÷ 0.001).
How many grams are in a kilogram?
1 kilogram is 1,000 grams, from the exact unit definitions (NIST SP 811).
How do I convert kg to grams?
Multiply by 1,000: g = kg × 1000 (the same as kg ÷ 0.001). For example, 1 kg × 1,000 = 1,000 g.
How do I convert grams back to kg?
Multiply by 0.001, or type the grams into the second box and the converter works it out. 1 gram is 0.001 kilograms.