Density Calculator (ρ = m/V)
By Santaji GadepatilinUpdated October 27, 2026
calculated
calculated
Type in any field to change it. Press × on a value to calculate that field instead.
How to use this calculator
Enter mass and volume to get density and specific gravity, or enter density to find mass or volume.
The formula
ρ = m ÷ V
Worked example
A 1-litre block of steel has a mass of 7.85 kg:
ρ = 7.85 kg ÷ 0.001 m³ = 7,850 kg/m³ (specific gravity 7.85)
Common densities
| Material | kg/m³ |
|---|---|
| Air (20 °C) | 1.2 |
| Wood (pine) | 500 |
| Ice | 917 |
| Water | 998 |
| Concrete | 2,400 |
| Aluminium | 2,700 |
| Steel | 7,850 |
| Copper | 8,960 |
| Gold | 19,300 |
Frequently asked questions
What is the density formula?
Density = mass ÷ volume. Its SI unit is kg/m³; 1 g/cm³ = 1,000 kg/m³.
What is specific gravity?
Density relative to water (about 1,000 kg/m³). Steel has a specific gravity of about 7.85.
Will it float?
In water, objects with specific gravity below 1 float and those above 1 sink.