Calculate mass, density, or volume using the formula Mass = Density × Volume. Convert between units and reference common material densities.
Mass
1 kg
1000 g
Formula: Mass = Density × Volume
Mass
1 kg
1000 g | 2.2046 lb
Density
1000 kg/m³
1 g/cm³
Volume
0.001 m³
1 L | 0.2642 gal
Click a material to use its density:
| Unit | Value |
|---|---|
| Kilograms (kg) | 1 |
| Grams (g) | 1000 |
| Milligrams (mg) | 1.000e+6 |
| Pounds (lb) | 2.2046 |
| Ounces (oz) | 35.274 |
| Metric Tons | 0.001 |
Mass = Density x Volume (M = D x V). To calculate: multiply the density of the material by its volume. Example: Water (1 g/cm3) with 500 cm3 volume has mass = 1 x 500 = 500 grams. Unit conversions: 1 kg = 1000g = 2.205 lb. 1 lb = 453.6g = 16 oz. Remember: mass is not the same as weight (mass is constant, weight depends on gravity).
Mass = Density × Volume. For example, if you have 2 liters of water (density 1 g/cm³), the mass is 2 L × 1 kg/L = 2 kg. Make sure to use consistent units or convert them first.
Mass is the amount of matter in an object, measured in kilograms. Weight is the force of gravity on that mass, measured in newtons. On Earth, weight (N) = mass (kg) × 9.81 m/s². Mass stays constant; weight varies by location.
Density = Mass / Volume. Measure the object's mass with a scale. For volume, use water displacement: submerge the object and measure how much water is displaced. Divide mass by volume to get density.
Oil floats because it has a lower density than water. Water's density is about 1000 kg/m³, while most oils are around 800-920 kg/m³. Less dense substances float on more dense liquids.
Common densities in kg/m³: Water = 1000, Aluminum = 2700, Steel = 7850, Gold = 19300, Wood = 500-900, Concrete = 2400, Air = 1.2. These values help identify materials and calculate unknown masses or volumes.
Mass
1 kg
1000 g