Density Converter
Convert between kilograms per cubic meter, grams per cubic centimeter, pounds per cubic foot, pounds per gallon and other density units.
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Density units
Every unit below converts to every other one in the calculator. Values are relative to the base unit, the kilogram per cubic meter (kg/m³).
| Unit | Symbol | System | Value |
|---|---|---|---|
| Kilogram per cubic meter | kg/m³ | SI | Base unit |
| Gram per cubic centimeter | g/cm³ | metric | = 1000 kg/m³ |
| Gram per cubic meter | g/m³ | metric | = 0.001 kg/m³ |
| Pound per cubic foot | lb/ft³ | US customary | ≈ 16.01846337 kg/m³ |
| Pound per cubic inch | lb/in³ | US customary | ≈ 27679.90471 kg/m³ |
| Pound per gallon (US) | lb/gal | US customary | ≈ 119.8264273 kg/m³ |
| Pound per gallon (imperial) | lb/gal (UK) | imperial | ≈ 99.77637266 kg/m³ |
| Ounce per cubic inch | oz/in³ | US customary | ≈ 1729.994044 kg/m³ |
| Slug per cubic foot | slug/ft³ | US customary | ≈ 515.3788184 kg/m³ |
Kilogram per cubic meter quick reference
| Kilogram per cubic meter | Gram per cubic centimeter | Pound per cubic foot | Pound per cubic inch |
|---|---|---|---|
| 1 kg/m³ | = 0.001 g/cm³ | ≈ 0.06242796058 lb/ft³ | ≈ 0.000036127292 lb/in³ |
| 10 kg/m³ | = 0.01 g/cm³ | ≈ 0.6242796058 lb/ft³ | ≈ 0.00036127292 lb/in³ |
| 100 kg/m³ | = 0.1 g/cm³ | ≈ 6.242796058 lb/ft³ | ≈ 0.0036127292 lb/in³ |
| 1000 kg/m³ | = 1 g/cm³ | ≈ 62.42796058 lb/ft³ | ≈ 0.036127292 lb/in³ |
Among the 9 density units on this page, the smallest is the gram per cubic meter (g/m³) and the largest is the pound per cubic inch (lb/in³).
More density conversions
- Gram per cubic centimeter to Kilogram per cubic meterg/cm³ → kg/m³
- Kilogram per cubic meter to Pound per cubic footkg/m³ → lb/ft³
- Kilogram per cubic meter to Gram per cubic centimeterkg/m³ → g/cm³
- Pound per cubic foot to Kilogram per cubic meterlb/ft³ → kg/m³
- Pound per gallon (US) to Kilogram per cubic meterlb/gal → kg/m³
- Gram per cubic centimeter to Pound per cubic inchg/cm³ → lb/in³
- Kilogram per cubic meter to Pound per gallon (US)kg/m³ → lb/gal
- Pound per cubic inch to Gram per cubic centimeterlb/in³ → g/cm³
About density units
Density is mass per unit volume. Its SI unit is the kilogram per cubic meter (kg/m³), which equals one gram per liter. Water is close to 1 g/cm³, or 1000 kg/m³.
One g/cm³ is exactly 1000 kg/m³ and equals g/mL and kg/L. In US units it is about 62.428 lb/ft³ or 8.3454 lb/gal (US). Pounds per gallon depend on which gallon is meant, so US and imperial versions are kept apart.
Frequently asked questions
- How do I convert g/cm³ to kg/m³?
- Multiply by 1000. For example, 7.85 g/cm³ is 7850 kg/m³.
- How many lb/ft³ are in 1 g/cm³?
- About 62.428 lb/ft³. One lb/ft³ is about 16.018 kg/m³.
- What is specific gravity?
- The ratio of a density to the density of water. It has no unit, and its value is close to the density in g/cm³: a liquid with a specific gravity of 1.2 has a density of about 1.2 g/cm³.
- How many grams per cubic centimeter are in one kilogram per cubic meter?
- One kilogram per cubic meter = 0.001 g/cm³ (grams per cubic centimeter).
- How many pounds per cubic foot are in one kilogram per cubic meter?
- One kilogram per cubic meter ≈ 0.06242796058 lb/ft³ (pounds per cubic foot).
- How many pounds per cubic inch are in one kilogram per cubic meter?
- One kilogram per cubic meter ≈ 0.000036127292 lb/in³ (pounds per cubic inch).