Density Converter
Convert density between kg/m³, g/cm³, lb/ft³ and pounds per US gallon. Water is 1,000 kg/m³, the reference point for most materials.
Enter a value
Result
1 g/cm³ =
1,000 kg/m³
1 × 1,000 = 1,000
Show the working
- 1. Convert 1 g/cm³ to kg/m³s: 1 × 1,000 = 1,000.
- 2. Convert to kg/m³: 1,000 ÷ 1 = 1,000.
1 g/cm³ in every unit
Common material densities
- Water
- 1,000 kg/m³
- Ice
- 917 kg/m³
- Aluminium
- 2,700 kg/m³
- Steel
- 7,850 kg/m³
- Lead
- 11,340 kg/m³
- Gold
- 19,320 kg/m³
Good to know: Water is 1,000 kg/m³ = 1 g/cm³ ≈ 8.35 lb/gal — everything floats or sinks relative to it.
About this tool
Convert density between kg/m³, g/cm³, lb/ft³ and lb/gal — used for materials science, chemistry and shipping.
Formula
density in base ÷ factor: 1 g/cm³ = 1,000 kg/m³; 1 lb/ft³ = 16.0185 kg/m³; 1 lb/gal (US) = 119.826 kg/m³.
Reference values
- Water: 1,000 kg/m³ = 1 g/cm³
- 1 lb/ft³ = 16.0185 kg/m³
- 1 lb/gal (US) = 119.826 kg/m³
Questions people ask
How do you convert g/cm³ to kg/m³?
Multiply by 1,000: 1 g/cm³ = 1,000 kg/m³, because a cubic metre is a million cubic centimetres and a kilogram is a thousand grams.
What is the density of water in lb/ft³?
About 62.4 lb/ft³ — that is 1,000 kg/m³ expressed in imperial units.
Why do boats float if steel sinks?
A ship is mostly air, so its average density stays below water’s 1,000 kg/m³ even though the steel itself is far denser.
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How we calculate this
Density unit relationships follow the SI definition of the kilogram and metre, and the exact US customary definitions of the pound, foot and gallon. Source: NIST Handbook 44 (Appendix C).
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