About this calculator
Enter a value and choose the units.
How to use it
- Enter the value.
- Choose the unit it is in and the unit you want.
- Read the result, or see every unit in the table.
The formula
Result = value × (kg/m³ in the “from” unit) ÷ (kg/m³ in the “to” unit)
- 1 g/cm³
- 1,000 kg/m³ = 1 kg/L
- 1 lb/ft³
- 16.02 kg/m³
Worked example
Water
- 1 g/cm³ = 1,000 kg/m³.
- = 62.43 lb/ft³.
What the result means
The factors are exact international definitions, so results are as accurate as the digits shown.
Assumptions
- Density at a fixed temperature.
Limitations
- Density of liquids and gases changes with temperature.
Frequently asked questions
What is the density of water?
About 1,000 kg/m³ (1 g/cm³).
Is g/ml the same as g/cm³?
Yes.
How do I find weight from volume?
Weight = volume × density.
Last reviewed on 3 October 2026. Found a mistake? Tell us.