Density calculator

Density Calculator — Calculate Density, Mass, or Volume

This free Density Calculator helps you find the missing variable among density (ρ), mass (m), and volume (V). Simply enter any two values, and the calculator instantly computes the third using the fundamental physics formula:

Density Formula: ρ = m / V

Rearranged formulas:

• Mass (m) = ρ × V
• Volume (V) = m / ρ

Supported Units

You can use both metric and imperial units — including g/cm³, kg/m³, lb/ft³, oz/in³, and more. The calculator automatically converts units for consistency in results.

How to Use

1. Enter two of the three parameters — density, mass, or volume.
2. Choose your preferred unit system (SI or Imperial).
3. Click Calculate to instantly find the third variable.
4. Use Clear to reset all fields and start over.

Formula Explanation

Density measures how much mass is contained in a given volume. It’s a key physical property used in physics, engineering, chemistry, and material science.

For example, water at 4 °C has a density of 1 g/cm³ (or 1000 kg/m³), while air at 20 °C has a density of about 1.2 kg/m³.

Applications

• Physics and engineering calculations
• Material property analysis
• Chemistry and fluid dynamics
• Oil, gas, and fluid measurement

References

• Wikipedia — Density
• Britannica — Density (Physics)
• Byjus — Definition of Density