Density Calculator

Calculate density (ρ = m/V), or solve for mass or volume given any two of the three variables.

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Results (all units)

Enter values to calculate density.

Common Densities (g/cm³)

MaterialDensity (g/cm³)
Water (4°C)1
Seawater1.025
Ice0.917
Air (20°C)0.0012
Aluminum2.71
Iron / Steel7.874
Copper8.96
Gold19.32
Silver10.49
Lead11.34
Mercury13.53
Wood (oak)0.6
Concrete2.3
Glass2.5
Gasoline0.72
Ethanol0.789
Olive Oil0.9
Milk1.03

Calculate density, mass, or volume instantly with our free calculator, useful for physics, chemistry, and engineering applications.

How It Works

Density = Mass ÷ Volume. This calculator rearranges the formula to solve for any variable: Mass = Density × Volume, or Volume = Mass ÷ Density.

How to Use This Calculator

  1. Select what you want to calculate (density, mass, or volume)
  2. Enter the two known values with their units
  3. Click Calculate to see your result

Frequently Asked Questions

Why do objects with the same volume have different masses?

Because they have different densities, different materials pack different amounts of mass into the same volume, which is precisely what density measures.

What's the density of water and why does it matter?

Water's density is approximately 1 g/cm³ (or 1000 kg/m³) at standard conditions, it's commonly used as a reference point, objects less dense than water float, denser objects sink.

Does temperature affect density?

Yes, most materials expand when heated (becoming less dense) and contract when cooled (becoming denser), water is a notable partial exception near freezing.

What units are commonly used for density?

Common units include g/cm³, kg/m³, and lb/ft³, make sure your mass and volume units are consistent before calculating.