Density converter
Convert density between kg/m³, g/cm³ and pounds per cubic foot.
Fill in the fields and the result will appear here automatically.
Converts density between kilograms per cubic metre, grams per cubic centimetre, kilograms per litre, tonnes per cubic metre, grams per litre, pounds per cubic foot and per US gallon, and ounces per cubic inch.
How it works
Formula and logic
Every unit converts through the kilogram per cubic metre using exact factors.
Example
Water is about 1 g/cm³, that is 1000 kg/m³ or roughly 62.43 pounds per cubic foot.
Fields and units
- Density — in the selected source unit
- From unit — list option
- To unit — list option
How to use
- — Enter the value.
- — Pick the source unit.
- — Pick the target unit.
Method and limitations
- Calculation method
- Formula and logic
- Data or methodology source
- NIST: SI volume units NIST: fluid properties at a specified temperature and pressure
- Limitation
- The result is a rounded unit conversion. Check the entered value and selected units.
FAQ
Why is 1 g/cm³ equal to 1000 kg/m³?
A kilogram holds a thousand grams and a cubic metre holds a million cubic centimetres; a million divided by a thousand is a thousand.
What is the density of water?
About 1 g/cm³ at 4 °C. The exact value depends on temperature, so this tool converts units rather than looking up substances.
Can density be converted to mass?
No — that needs a volume. Density is mass per volume, and the converter works with that quantity alone.
Which gallon is used?
The US gallon of 3.785411784 litres. The imperial gallon is larger and is not used here.