How do I convert kg/m3 to g/cm3?
Type a value in either box, and the answer shows it in the other unit as you type.
- Grams per cubic centimeter (g/cm³)
- 0.001
1 kg/m³ = 0.001 g/cm³.
Grams per cubic centimeter (g/cm³): 0.001. 1 kg/m³ = 0.001 g/cm³.
Grams per cubic centimeter (g/cm³) by kilograms per cubic meter (kg/m³)
How to calculate
Converts kilograms per cubic meter (kg/m³) to grams per cubic centimeter (g/cm³) and back, with the exact unit definitions.
Example with the default inputs (Kilograms per cubic meter (kg/m³) 1): 1 kg/m³ = 0.001 g/cm³.
Formula: g/cm³ = kg/m³ × 0.001
- 1 kilogram per cubic meter = 0.001 grams per cubic centimeter, from the exact definitions in NIST SP 811.
- Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up; an answer of 1 billion or more shows at most 15 significant digits.
Worked examples
Each example is checked against the calculator on every build.
- Kilograms per cubic meter (kg/m³) 1 gives Grams per cubic centimeter (g/cm³) 0.001.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Kilograms per cubic meter (kg/m³) 1,000 gives Grams per cubic centimeter (g/cm³) 1.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Grams per cubic centimeter (g/cm³) 1 gives Kilograms per cubic meter (kg/m³) 1,000.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
Other questions people ask
How many grams per cubic centimeter are in a kilogram per cubic meter?
1 kilogram per cubic meter is 0.001 grams per cubic centimeter, from the exact unit definitions (NIST SP 811).
How do I convert kg/m3 to g/cm3?
Multiply by 0.001: g/cm³ = kg/m³ × 0.001. For example, 1 kg/m³ × 0.001 = 0.001 g/cm³.
How do I convert g/cm3 back to kg/m3?
Multiply by 1,000, or type the grams per cubic centimeter into the second box and the converter works it out. 1 gram per cubic centimeter is 1,000 kilograms per cubic meter.
Why divide by 1,000?
A gram is 0.001 kg and a cubic centimeter is 0.000001 m³ (SI prefixes), so 1 g/cm³ = 0.001 kg ÷ 0.000001 m³ = 1,000 kg/m³ exactly.
What is the density of water in g/cm³?
Pure water is 999.9749 kg/m³ at 4 °C, where it is densest, which is 0.999975 g/cm³, and 998.2067 kg/m³ at 20 °C, 0.998207 g/cm³ (Tanaka et al. 2001).