What is the formula for calculating density?

The standard formula for density is ρ = m / V, where ρ is density, m is mass, and V is volume. In SI units, density is expressed in kg/m³.

How do you calculate mass from density and volume?

Rearranging the formula gives mass: m = ρ × V. Multiply density by volume with compatible units.

What is the density of pure water?

Pure water reaches its maximum density of 1.000 g/cm³ (1,000 kg/m³) at 4°C, and is approximately 0.9982 g/cm³ at 20°C.

How do you convert g/cm³ to kg/m³?

Multiply by 1,000: 1 g/cm³ = 1,000 kg/m³ = 1 g/mL = 1 kg/L.

Density Calculator (ρ = m/V) | 密度在线计算器

Free online physics density calculator to solve density, mass, or volume with step-by-step mathematical derivations, standard material density charts (water, iron, aluminum, gold, alcohol), and Archimedes buoyancy simulations.

专业在线物理密度计算器（ρ = m/V），支持质量、体积、密度三者互求与推导步骤，内置常用物质密度表、阿基米德浮力沉浮模拟与国际单位自动换算。