Density Calculator
Calculate density from mass and volume, mass from density and volume, or volume from density and mass. Supports g/cm³ and kg/m³.
g
cm³
g/cm³
Density (g/cm³)
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Density (kg/m³) —
Mass (g) —
Volume (cm³) —
How to Use This Calculator
- Select what to solve for: Density, Mass, or Volume.
- Enter the two known values.
- Results show the answer in multiple units.
Formula
ρ = m ÷ V | m = ρ × V | V = m ÷ ρ
where ρ = density (g/cm³), m = mass (g), V = volume (cm³)
Example
Example: mass = 270 g, volume = 100 cm³ → density = 2.70 g/cm³ (aluminum).
Frequently Asked Questions
- Density (ρ) = Mass (m) ÷ Volume (V). For example, water has a density of 1 g/cm³ (or 1,000 kg/m³).
- Liquid water at 4°C has a density of 1.000 g/cm³ = 1,000 kg/m³ = 62.43 lb/ft³.
- Dry air at sea level and 20°C is approximately 0.00120 g/cm³ = 1.20 kg/m³.
- Aluminum has a density of approximately 2.70 g/cm³ (2,700 kg/m³).
- Use water displacement: submerge the object and measure the volume of water displaced. That volume equals the object's volume.