Free Density Calculator - Mass & Volume Made Easy
Calculate density, mass, or volume using the density formula. Essential for chemistry, physics, material science, and engineering applications.
Quick Answer
Density = mass ÷ volume. Water density is 1 g/cm³. Objects less dense than water float; denser objects sink.
Key Facts about Density Calculator:
- Density = mass / volume
- Water: 1 g/cm³ = 1000 kg/m³
- Ice: 0.92 g/cm³ (floats on water)
- Gold: 19.3 g/cm³
- Air at sea level: 0.00129 g/cm³
Why Use Our Density Calculator?
Complete density calculations:
Density Formula
Calculate ρ = m/V.
Mass Calculator
Find mass from density.
Volume Calculator
Find volume from density.
Unit Conversion
Multiple unit options.
Instant Results
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How to Density Calculator in 3 Easy Steps
Calculate density:
Enter Known Values
Mass and volume, or any two.
Select Units
Choose your preferred units.
Get Result
See the unknown value.
Master Density Calculations
Solve for any variable
Multiple unit systems
Material comparison
Buoyancy prediction
Common Use Cases for Density Calculator
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Frequently Asked Questions
Everything you need to know about our density calculator
What is the formula for density?
Density = Mass ÷ Volume (ρ = m/V)
Density = Mass / Volume (ρ = m/V). Rearranged: Mass = Density × Volume, Volume = Mass / Density. Common units: g/cm³, kg/m³, lb/ft³.
What is the density of water?
1 g/cm³ or 1000 kg/m³ at 4°C
Pure water at 4°C has density of exactly 1 g/cm³ or 1000 kg/m³. This is why the metric system is convenient - 1 liter of water weighs 1 kilogram.
Why do some things float?
Objects less dense than the liquid will float
Objects float if their density is less than the liquid. Wood (0.6-0.9 g/cm³) floats on water (1 g/cm³). Steel (7.8 g/cm³) sinks.
Still have questions? Try the tool yourself!
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