Density Converter
Convert density between kg/m³, g/cm³, lb/ft³, lb/in³, pounds per gallon and tons per cubic yard.
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- Exact?
In Every Unit
| Unit | Value |
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How to Convert Density Units
Density is mass over volume, so each factor is a mass factor divided by a volume factor. Water is about 1 g/cm³, which is 1,000 kg/m³ or 62.43 lb/ft³.
lb/ft³ = g/cm³ × 62.42796 kg/m³ = lb/ft³ × 16.01846
Worked Example
Common Conversions
| From | Equals |
|---|---|
| 1 g/cm³ | 62.42796 lb/ft³ |
| 1 lb/ft³ | 16.01846 kg/m³ |
| 1 kg/m³ | 0.06242796 lb/ft³ |
| 1 lb/gal | 0.1198264 kg/L |
| 1 lb/in³ | 27.6799 g/cm³ |
| 1 lb/yd³ | 0.5932764 kg/m³ |
Unit Definitions
| Unit | Equals | Exact? |
|---|---|---|
| Kilograms per cubic meter (kg/m³) | 1 kg/m³ | Exact |
| Grams per cubic centimeter (g/cm³) | 1,000 kg/m³ | Exact |
| Grams per milliliter (g/mL) | 1,000 kg/m³ | Exact |
| Kilograms per liter (kg/L) | 1,000 kg/m³ | Exact |
| Grams per liter (g/L) | 1 kg/m³ | Exact |
| Pounds per cubic foot (lb/ft³) | 16.01846337 kg/m³ | Exact |
| Pounds per cubic inch (lb/in³) | 27,679.904709999999 kg/m³ | Exact |
| Pounds per US gallon (lb/gal) | 119.8264273 kg/m³ | Exact |
| Ounces per cubic inch (oz/in³) | 1,729.994044 kg/m³ | Exact |
| Pounds per cubic yard (lb/yd³) | 0.5932764213 kg/m³ | Exact |
| US tons per cubic yard (ton/yd³) | 1,186.552843 kg/m³ | Exact |
| Slugs per cubic foot (slug/ft³) | 515.3788184 kg/m³ | Exact |
Factors follow NIST Special Publication 811, Appendix B. "Exact" means the unit is defined as that value; results are rounded only for display.
Tips
Pounds per gallon here uses the US gallon; water is about 8.34 lb/gal. For the density of a specific material, see the density calculator.