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densityClassic tool

Density Calculator

Calculate density from mass and volume with automatic conversion across common units.

Use this density calculator to measure how much mass fits inside a given volume for liquids, solids, containers, parts and simple lab work. The tool applies the standard formula density = mass ÷ volume and returns the result in familiar units such as kg/m³, g/cm³, g/mL and lb/ft³.

It works well for school assignments, engineering estimates, shipping checks, 3D printing projects, material comparison and quick science references. You can enter mass in kilograms, grams or pounds, then pair it with volume in liters, cubic meters, milliliters, cubic centimeters or cubic feet.

The result area also shows the base conversions used in the calculation. That makes it easier to audit the math, compare materials across unit systems and sanity-check whether the value looks reasonable for water, metals, plastics, wood, food products and other substances.

Quick example: 1 kg in 1 L is about 1000 kg/m³. Submit or edit the fields to recalculate.

SummaryEnter mass and volume to calculate density.
Density in kg/m³—
Density in g/cm³ and g/mL—
Density in lb/ft³—
Base conversions—
Applied formula—

Use clear inputs to get a more useful result.