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Density Calculator

Science Calculator

Density Calculator

Calculate density from mass and volume, with results in grams per milliliter, kilograms per cubic meter, and specific volume.

Calculate density

Density1.25 g/mL
SI density1,250 kg/m³
Specific volume0.0008 m³/kg

Density depends on temperature, pressure, composition, porosity, and measuring method. Use consistent conditions for comparisons.

How to use the density calculator

Enter a measured mass and volume, then select their units. The calculator converts both values to SI base relationships and reports density in grams per milliliter and kilograms per cubic meter, plus specific volume.

Density formula

Density = mass / volume; specific volume = volume / mass = 1 / density

Grams are converted to kilograms and milliliters, liters, or cubic centimeters are converted to cubic meters. One milliliter equals one cubic centimeter, and 1 g/mL equals 1,000 kg/m³.

Worked example

A sample with a mass of 250 grams and a volume of 200 milliliters has a density of 250 / 200 = 1.25 g/mL. The equivalent SI value is 1,250 kg/m³, and the specific volume is 0.0008 m³/kg.

Accuracy and assumptions

  • Mass and volume are measured for the same sample.
  • Inputs are treated as exact numeric values until display rounding.
  • Temperature and pressure are not adjusted.
  • Bulk materials with air spaces can have different bulk and particle densities.
  • The result is only as accurate as the original measurements.

Frequently asked questions

Is 1 mL the same volume as 1 cm³?

Yes. A milliliter is the special name for one cubic centimeter.

Why can density change with temperature?

Many materials expand or contract as temperature changes. Their mass may stay nearly constant while volume changes, which changes density.

What is specific volume?

Specific volume is volume per unit mass and is the reciprocal of density when the units are consistent.

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Sources and review

SI units and derived relationships were checked against NIST references for derived quantities including density and volume units. Calculator logic and examples were reviewed by the DIY Cost Tools editorial team on September 28, 2026.