🔬ScienceUpdated March 2026

Free Density Calculator 2026

Calculate density, mass, or volume using the density formula. Free online physics calculator.

How to use this calculator

  1. 1Select what you want to calculate: density, mass, or volume.
  2. 2Enter the two known values (mass in kg/g and volume in m³/cm³).
  3. 3Click Calculate to get your result.
  4. 4Use the conversion options to switch between units.

Written by FreeToolCalc Team

Formulas based on standard financial/medical equations. Last updated: March 2026.

Understanding Density in Physics

Density is a fundamental property of matter that describes how much mass is contained in a given volume. It's calculated using the formula: Density = Mass / Volume.

Common Densities

  • Water: 1 g/cm³ (1000 kg/m³)
  • Air: 0.0012 g/cm³ (1.2 kg/m³)
  • Gold: 19.3 g/cm³ (19300 kg/m³)
  • Aluminum: 2.7 g/cm³ (2700 kg/m³)

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Frequently Asked Questions

What is the density formula?

Density = Mass / Volume. The standard units are kg/m³, but g/cm³ is also commonly used.

What is the density of water?

The density of water is approximately 1000 kg/m³ or 1 g/cm³ at 4°C (its maximum density).

How do I convert between kg/m³ and g/cm³?

To convert from kg/m³ to g/cm³, divide by 1000. To convert from g/cm³ to kg/m³, multiply by 1000.