Density / Mass / Volume Calculator

Density is how much mass is packed into a given volume: ρ = mass ÷ volume. A 100 g object taking up 50 cm³ has a density of 2 g/cm³ — twice as dense as water.

All three come from ρ = m / V. Density is m ÷ V, mass is ρ × V, and volume is m ÷ ρ. This calculator solves whichever one you pick from the other two.

Density is a property of the material (mass per volume) and doesn't change with amount or location. Weight is a force — mass times gravity — so the same object weighs less on the Moon while its density stays the same.

Yes, exactly. 1 milliliter is defined as 1 cubic centimeter, so 1 g/mL and 1 g/cm³ are the same density. This calculator treats them as identical.

An object floats when it is less dense than the fluid around it: it sinks only until the weight of the displaced fluid equals its own weight (Archimedes' principle). Ice floats because at 0.92 g/cm³ it is less dense than liquid water at 1 g/cm³.

Lab work usually uses g/cm³ (or g/mL), while the SI unit is kg/m³ — water is 1 g/cm³ = 1000 kg/m³. This calculator converts between g/cm³, g/mL, kg/L, and kg/m³ automatically.