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Density calculator
Work out density, mass or volume from the other two with this free density calculator. Fill in two fields, and the third is solved in kilograms per cubic meter, kilograms and cubic meters. It runs in your browser, with no sign-up.
How to calculate density
- 1Leave empty the value you want to find
- 2Type the other two: density, mass or volume
- 3Read all three values in the result
- Density, mass and volume, with the gap filled in.
What you get
- Any one of the three.Density is mass divided by volume, so any one can be found from the other two.
- Fixed SI units.Results are in kg/m³, kg and m³, so there is nothing to mix up.
- Nothing is uploaded.The numbers are worked out in your browser and not sent anywhere.
What you can do
- Find density from mass and volume: ρ = m / V.
- Find mass from density and volume, for example how heavy a tank of liquid is.
- Find volume from density and mass, for example how much space a block of metal takes.
- Start values (10 kg and 2 m³) are already in, so you see a result right away.
Good to know
- Enter exactly two of the three fields. With one or three filled in, the tool asks you to fix it.
- All values use kilograms, cubic meters and kg/m³. Convert grams or liters first.
- Water is about 1000 kg/m³, which is a handy check for your result.
Questions
How do I calculate density?
Divide mass by volume. A 10 kg block that fills 2 m³ has a density of 5 kg/m³.
Can I find mass if I know the density?
Yes. Clear the mass field, enter density and volume, and the tool multiplies them.
Which units does the density calculator use?
Kilograms, cubic meters and kilograms per cubic meter. For grams or liters, convert them first.
Is it free, and do I need an account?
It is free and needs no account. The calculation happens in your browser.