kg to Liters Calculator — Kilograms to Litres
Convert kilograms to litres (or litres to kilograms) for common liquids using the relationship V = m ÷ ρ. Choose a substance or enter a custom density to get volume in litres, mL, gallons and more.
Conversion direction
kg
Substance
Volume (L) = mass (kg) ÷ density (kg/L)
- 1
Substance density
0.998Density of the selected substance in kg/L. - 2
Divide mass by density
10 ÷ 0.998 = 10.0200V = m ÷ ρ
How does this calculator work?
Divide mass in kg by density in kg/L to get volume in litres. For water (ρ ≈ 1 kg/L): 10 kg = 10 L. For gasoline (ρ ≈ 0.737 kg/L): 10 kg = 13.57 L. For honey (ρ ≈ 1.42 kg/L): 10 kg = 7.04 L. To reverse: multiply litres by density.
Formula
How this is calculated
Mass and volume are linked by density: V = m / ρ. For water at 4 °C the density is exactly 1 kg/L (by historical definition), making the conversion trivial — 1 kg of water = 1 litre. At 20 °C water's density is 0.998 kg/L, so 1 kg is very slightly more than 1 L.
For other substances the ratio changes considerably. A kilogram of honey (ρ ≈ 1.42 kg/L) occupies only 0.70 L, while a kilogram of gasoline (ρ ≈ 0.74 kg/L) occupies about 1.36 L. Mercury, one of the densest common liquids, has ρ ≈ 13.53 kg/L — so 1 kg of mercury is less than 74 mL.
Densities here are representative values at approximately 20 °C and atmospheric pressure. They vary with temperature; cold water is denser than warm. For food, fuel or industrial applications where accuracy matters, obtain the measured density at the actual process temperature and enter it via the custom-density field.
Frequently asked questions
1 kg of water is approximately 1.002 litres at 20 °C (density 0.998 kg/L). At 4 °C, where water is densest, 1 kg equals almost exactly 1 litre.
Whole milk has a density of about 1.030 kg/L, so 1 kg of milk ≈ 0.971 litres, and 1 litre of milk ≈ 1.030 kg. The exact density varies with fat content.
Yes — the formula V = m / ρ works for any substance, as long as you know the density. Select the substance from the list or enter a custom density. Density tables are widely available from chemistry handbooks and material data sheets.
TG we-Calculate Editorial Team. (2026). kg to Liters Calculator — Kilograms to Litres [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/kg-to-liter-calculator
TG we-Calculate Editorial Team. "kg to Liters Calculator — Kilograms to Litres." TG we-Calculate. 2026. https://we-calculate.com/calculator/kg-to-liter-calculator.
TG we-Calculate Editorial Team, "kg to Liters Calculator — Kilograms to Litres," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/kg-to-liter-calculator
@misc{wecalculate_kg_to_liter_calculator, title = {kg to Liters Calculator — Kilograms to Litres}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/kg-to-liter-calculator}}, year = {2026}, note = {TG we-Calculate} }
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