Density Converter
Convert between kg/m³, g/cm³, lb/ft³, lb/in³, lb/gal, and other density units — for engineering, chemistry, and materials science.
Reviewed October 7, 2026 Runs in your browser — inputs are never stored
1 kg/m³ = 0.001000 g/cm³
This tool provides general unit conversions for everyday and educational use. For regulated, legal, or scientific applications, verify conversion factors against the applicable official standard.
About the Density Converter
The density converter changes density values between kg/m³, g/cm³, g/mL, kg/L, lb/ft³, lb/in³, lb/gal, oz/in³ and slug/ft³. Water has a density of 1,000 kg/m³ (1 g/cm³), which is a handy reference. Density links mass and volume, so it is needed for material estimates, buoyancy and fluid calculations.
How to use it
- 1Type the value you want to convert.
- 2Choose the unit you are converting from and the unit you want (for example g/cm³ to lb/ft³).
- 3The result updates as you type; use the swap button to reverse the direction.
- 4Copy or share the result with the buttons below it.
Worked example
steel at 7.85 g/cm³ is 7,850 kg/m³, or about 490 lb/ft³.
How it works
Key densities
Water: 1,000 kg/m³ = 1 g/cm³ · Steel: ~7,850 kg/m³ · Aluminum: ~2,700 kg/m³ · Air: ~1.225 kg/m³ (at sea level).
Common use cases
- Material weight estimates
- Engineering and physics calculations
- Comparing material data sheets
Frequently asked questions
A:1,000 kg/m³ = 1 g/cm³ = 1 g/mL = 8.345 lb/gal at 4°C (maximum density).
A:The slug is the US customary unit of mass. 1 slug/ft³ ≈ 515.4 kg/m³. Used in aeronautics and fluid dynamics.
Reviewed for accuracy · Last updated October 7, 2026
Conversion factors are based on internationally defined SI units and standard metric/imperial equivalence tables.
CalcWisee Editorial Team
Calculator development and formula review
CalcWisee is an independent site founded by Ayman. Every calculator is built from a published formula or official definition, tested against hand-worked examples before it goes live, and corrected promptly when a reader reports an issue to ayman@calcwisee.com.
Expertise: Financial mathematics, Health and fitness formulas, Applied mathematics, Unit conversion standards
References & sources
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