Density Calculator
Fast, accurate, and free online Density Calculator tool that runs directly in your browser.
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Density Calculator
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Other tools you may find usefulDensity calculator - mass, volume and unit conversions
Calculate the density of any substance. Enter the weight and volume and the calculator will automatically give you the result inkg/m³, g/cm³org/ml. A tool useful in chemistry, physics, engineering and materials analysis. It also allows you to calculate mass from density and volume and vice versa.
Run the density calculator How the calculation works
How the density calculator
- You enter two of three values:mass, volumeordensity.
- The calculator will automatically recalculate the missing value from using the formula
ρ = m / V. - Supported units: g, kg, mg, t for mass and ml, cm³, dm³, m³ for volume.
- Results in many units at the same time, with the possibility of comparison.
Basic formulas
ρ = m / V
m = ρ V
V = m / ρDensity (ρ) is the mass of a unit volume. The SI unit iskg/m³. In chemistry, the popular form isg/cm³org/ml, equivalent to a thousand-fold increase in units.
Step-by-step instructions
- Select what you want to calculate - density, mass or volume.
- Enter known values and units.
- ClickCalculate. The result will appear in several units to make it easier to compare with the material tables.
- You can change data without refreshing the page - the calculator calculates immediately.
Calculation examples
1. Water
m = 1 kg, V = 1 dm³ (1 letter).
ρ = 1 kg/dm³ = 1000 kg/m³ = 1 g/cm³.
This is the standard of comparison for most substances.
2. Aluminum
ρ = 2.7 g/cm³, V = 10 cm³.
m = 27 g.
Light metal, often used in construction and aviation.
3. Steel
ρ = 7.85 g/cm³, V = 50 cm³.
m = 392.5 g.
Heavier construction material, density used for strength calculations.
4. Oil
m = 0.9 kg, V = 1 dm³.
ρ = 900 kg/m³.
Lighter than water, so it floats on its surface.
Density table of common substances
| Substance | Density [kg/m³] | Notes |
|---|---|---|
| Air | 1.225 | at 15 °C, 1 atm |
| Water | 1000 | at 4 °C |
| Vegetable oil | 920 | average value |
| Iron | 7874 | structural metal |
| Lead | 11340 | heavy metal |
| Aluminum | 2700 | light metal |
| Gold | 19320 | precious metal |
Units and conversions
- 1 g/cm³ = 1000 kg/m³
- 1 kg/m³ = 0.001 g/cm³
- 1 ml = 1 cm³
- 1 dm³ = 1 letter = 0.001 m³
- 1 g/ml = 1000 kg/m³
Frequently asked questions (FAQ)
How to calculate density?
Divide the mass by the volume: ρ = m/V. Express the result in kg/m³ or g/cm³.
Can I calculate mass from density?
Yes. Multiply the density by the volume: m = ρ·V.
How to convert g/cm³ to kg/m³?
Multiply by 1000. For example, 2.7 g/cm³ = 2700 kg/m³.
Why does temperature affect density?
When heated, the volume increases, but the mass remains the same, so the density decreases.
Formulas in practice
Liquids
Measure the volume of the container, weigh the liquid, divide the mass by the volume. Perfect for home experiments.
Solids
Determine the volume using the buoyancy method. The difference in water levels corresponds to the volume of the submerged body.
Summary:density calculator allows you to quickly check the relationship between mass and volume in various units. Useful in the laboratory, workshop and school.