How it's calculated
L = kg ÷ density
kg = mass, L = volume, density in kg/L (water 1.000, oil 0.920, gasoline 0.748, honey 1.420, mercury 13.546). Reverse: kg = L × density.
Common values
| Substance | 1 kg equals | 1 L equals |
|---|---|---|
| Water | 1.00 L | 1.00 kg |
| Gasoline | 1.34 L | 0.75 kg |
| Milk | 0.97 L | 1.03 kg |
| Honey | 0.70 L | 1.42 kg |
| Olive oil | 1.10 L | 0.91 kg |
Common questions
Why isn't 1 kg always 1 liter?
Only water has a density near 1 kg per liter. Lighter liquids like gasoline take more volume per kg, and denser ones like honey take less.
Where do the densities come from?
They are reference values from NIST, USDA, and BIPM for each substance at typical conditions.