Density (rho) is mass per unit volume: rho = m/V. It explains why oil floats on water and why helium balloons rise.
Formula and Units
Standard unit: kg/m^3. Water's density is approximately 1000 kg/m^3. Calculate with our Density Calculator.
Rearranging
m = rho * V and V = m/rho. Given any two values, solve for the third.
Example
Mass 500 g, volume 250 cm^3: rho = 2 g/cm^3 = 2000 kg/m^3 - denser than water.
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