Density Calculator
Calculate density, mass, or volume instantly using the density formula. Choose your units and let the calculator solve for the value you need.
Solve the Density Formula
Choose what you want to calculate, enter the two known values, and select your preferred units. The calculator uses ρ = m / V to solve for density, mass, or volume.
Density Formula Inputs
ρ = mass ÷ volume
Calculation Result
Solved using the density formula
Common Material Densities
Typical densities for everyday materials at room temperature, shown in both metric units.
| Material | Density (kg/m³) | Density (g/cm³) |
|---|---|---|
| Air (at sea level) | 1.2 | 0.0012 |
| Ice | 917 | 0.917 |
| Water (fresh, 4°C) | 1,000 | 1.000 |
| Seawater | 1,025 | 1.025 |
| Olive Oil | 920 | 0.92 |
| Aluminium | 2,700 | 2.70 |
| Concrete | 2,400 | 2.40 |
| Iron | 7,874 | 7.87 |
| Steel | 8,050 | 8.05 |
| Lead | 11,340 | 11.34 |
| Gold | 19,300 | 19.30 |
Density Calculator FAQ
Everything you need to know about density and how this calculator works.
Density equals mass divided by volume, usually written as ρ = m / V. The same formula can be rearranged to find mass (mass = density × volume) or volume (volume = mass / density) when the other two values are known.
Density is commonly expressed in kilograms per cubic metre (kg/m³) in scientific contexts, or grams per cubic centimetre (g/cm³) for smaller everyday objects. In imperial measurements, pounds per cubic foot (lb/ft³) is often used.
An object floats in a fluid when its density is lower than the density of that fluid, and sinks when its density is higher. This is why materials like wood or ice float on water, while metals like iron or lead sink.
Yes, most materials expand slightly as temperature increases and contract as it decreases, which changes their volume without changing their mass, and therefore changes their density. This effect is usually small for solids but can be significant for liquids and gases.