Density unit converter
Convert density units — kg/m³, g/cm³, g/mL, kg/L, lb/ft³, lb/in³ and lb/US gallon — with 1 g/cm³ = 1000 kg/m³.
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Result
The source to target line first, then every common unit.
Enter a density to convert
Units: 0
What this tool does
- Convert material densities for selection and moulding estimates: 1 g/cm³ = 1000 kg/m³.
- Translate imperial densities from US datasheets — 1 lb/ft³ = 16.018463 kg/m³.
- Unify units before multiplying by volume so results are not off by a factor of 1000.
Example
Input
1
Output
克每立方厘米 (g/cm³) → 千克每立方米 (kg/m³)：1 g/cm³ = 1000 kg/m³ 千克每立方米 (kg/m³) = 1000 kg/m³ 克每立方厘米 (g/cm³) = 1 g/cm³ 克每毫升 (g/mL) = 1 g/mL 千克每升 (kg/L) = 1 kg/L 克每升 (g/L) = 1000 g/L 吨每立方米 (t/m³) = 1 t/m³ 磅每立方英尺 (lb/ft³) = 62.427961 lb/ft³ 磅每立方英寸 (lb/in³) = 0.036127 lb/in³ 磅每美制加仑 (lb/gal) = 8.345404 lb/gal
1 g/cm³ = 1000 kg/m³ (definition); imperial densities use the exact 1 lb = 0.45359237 kg.
Frequently asked questions
How far apart are g/cm³ and kg/m³?
Exactly a factor of 1000: 1 g/cm³ = 1000 kg/m³. Water is about 1 g/cm³ and steel about 7.85 g/cm³ = 7850 kg/m³.
Why is the lb/ft³ factor not a round number?
Because 1 lb = 0.45359237 kg and 1 ft³ = 0.028316846592 m³, giving 16.018463373960142 kg/m³ — an exact conversion shown to 6 decimals.
Why only the US gallon for lb/gal?
lb/gal here means the US gallon (3.785411784 L). An imperial gallon is 4.54609 L, so lb/gal(UK) is about 17% smaller; convert with 1 lb/gal(UK) = 99.776 kg/m³ if your data is British.
Is density the same as specific gravity?
No. Density has units (kg/m³) while specific gravity is a ratio against a reference (usually water at 4 °C, 1000 kg/m³) and is dimensionless.
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