Physics Tools
Density Calculator
Enter any two of density, mass, or volume to solve for the third. Density measures how much mass is packed into a given volume.
Enter any two of density, mass, and volume to solve for the third.
Physics Tools
Enter any two of density, mass, or volume to solve for the third. Density measures how much mass is packed into a given volume.
Enter any two of density, mass, and volume to solve for the third.
Density is the amount of mass per unit volume, expressed as ρ = m ÷ V. It tells you how tightly matter is packed. For example, water has a density of 1 g/cm³, while lead has a density of 11.34 g/cm³. Denser materials are heavier for the same volume.
Enter values for any two of the three properties: density, mass, or volume. The calculator instantly computes the missing value using the density formula. Switch between metric (g/cm³) and imperial (lb/ft³) units.
ρ = m ÷ V; m = ρ × V; V = m ÷ ρDensity equals mass divided by volume. Rearrange to solve for mass (density times volume) or volume (mass divided by density). All three equations are equivalent; use the one that solves for your unknown.
| Input | Result | Notes |
|---|---|---|
| Mass 100 g, Volume 50 cm³ | Density = 2 g/cm³ | ρ = 100 ÷ 50 = 2 g/cm³; this matches the density of water-based solutions or certain plastics. |
| Density 8.96 g/cm³, Volume 10 cm³ | Mass = 89.6 g | m = 8.96 × 10 = 89.6 g; this is copper, a dense metal commonly used in electrical wiring. |
| Density 0.92 g/cm³, Mass 46 g | Volume = 50 cm³ | V = 46 ÷ 0.92 = 50 cm³; this matches the density of ice, which floats because it is less dense than liquid water. |
Mass is the total amount of matter in an object (grams or pounds). Density is how tightly that mass is packed (mass per unit volume). A large piece of foam has high mass but low density.
Ice is less dense than liquid water. Ice has a density of about 0.92 g/cm³, while water is 1.0 g/cm³. Objects less dense than their surrounding fluid float.
Yes. Enter 0.92, 2.7, or 11.34 for densities of ice, aluminum, or lead. The calculator handles any positive decimal value.
Use the unit-system toggle. The calculator does not auto-convert your entered values; enter new values in your target unit, or manually convert (1 g/cm³ ≈ 62.43 lb/ft³).
No. The calculator requires exactly two inputs to solve for the third. If you enter all three, it will not compute.
Specific gravity is a dimensionless ratio of an object's density to the density of water. Density has units (g/cm³ or lb/ft³). For water, density = 1 g/cm³ but specific gravity = 1 (no units).