Density Calculator – Mass, Volume, Density
Calculate density, mass, or volume using ρ = m/V.
About This Calculator
Calculate density, mass, or volume using ρ = m/V. Use the calculator above for instant results.
Worked Examples
- Density = 500/250 = 2.0 g/cm³ (aluminum-ish)
Answer: 2.0 g/cm³
- Density = 1.0 g/cm³ = water density
Answer: 1.0 g/cm³ (water)
- Density = 20.0 g/cm³ (denser than iron)
Answer: 20 g/cm³
Who Uses This Calculator?
Calculate density for lab reports.
Material identification by density.
Buoyancy and fluid mechanics.
Material selection by density.
Common Mistakes to Avoid
❌ Mixing unit systems
Mass in grams and volume in cm³ gives g/cm³. Mass in kg and volume in L also gives kg/L (same number!). Never mix g with L without converting.
❌ Density vs weight
Density = mass per volume. Weight depends on gravity too. A 1 kg object weighs 9.81 N on Earth.
Frequently Asked Questions
Density formula?
ρ = m/V. Rearrange: m = ρV or V = m/ρ.
Density of common materials?
Water: 1.0. Ice: 0.917 (floats!). Aluminum: 2.7. Iron: 7.87. Gold: 19.3. Air: 0.0012 g/cm³.
Why does ice float?
Ice (0.917 g/cm³) is less dense than water (1.0 g/cm³). One of water's unique properties critical for life on Earth.