Density Calculator
Calculate density, mass, or volume using the density formula. Enter any two values to find the third.
How to Use the Density Calculator
- Enter the known physical values in the corresponding fields.
- Select the appropriate units if multiple options are available.
- The unknown value is computed instantly from the formula.
- Review the result and the formula explanation below.
快速参考
| 从 | 到 |
|---|---|
| Water | 1,000 kg/m³ |
| Air | 1.225 kg/m³ |
| Steel | 7,800 kg/m³ |
| Aluminum | 2,700 kg/m³ |
| Gold | 19,320 kg/m³ |
| Wood (oak) | 600–900 kg/m³ |
使用场景
- •Solving physics homework or exam problems with the correct formula.
- •Verifying experimental measurements and calculations in the lab.
- •Understanding physical relationships between quantities.
- •Quick engineering calculations for design or estimation.
公式
Density: ρ = m / V. Mass: m = ρ × V. Volume: V = m / ρ. Where ρ is density, m is mass, and V is volume.
常见问题
What is density?
Density is mass per unit volume (ρ = m/V). It tells you how much matter is packed into a given space.
What are common units for density?
The SI unit is kg/m³. Other common units include g/cm³ (1 g/cm³ = 1000 kg/m³) and g/mL.
How do I find mass from density and volume?
Multiply density by volume: m = ρ × V. For example, 1000 kg/m³ × 0.5 m³ = 500 kg.
Does density depend on temperature?
Yes. Most materials expand when heated, so their density decreases. Water is densest at about 4 °C.