Density Calculator
Calculate the relationship between mass, volume, and density.
Other Units
Understanding Density
What is Density?
Density is a measure of mass per unit of volume. It essentially tells you how much "stuff" is packed into a certain amount of space. An object with a higher density is heavier for its size.
How do I find Mass from Density?
If you know the density (ρ) and the volume (V), you can calculate the mass using the formula: m = ρ × V. Simply multiply the density by the volume.
Why do objects float or sink?
Objects float if they are less dense than the fluid they are in. For example, wood floats on water because its density is lower than water's density (approx 1000 kg/m³). Steel sinks because it is denser.
Common Density Units
The SI unit is kg/m³ (kilograms per cubic meter). In chemistry, g/cm³ (grams per cubic centimeter) is common. In the US, lb/ft³ (pounds per cubic foot) is often used for construction materials.