Kilogram to Gallon Converter
Convert kilograms to US gallons (and back) for water, fuel, oil, and other liquids using accurate density values.
Reviewed October 7, 2026 Runs in your browser — inputs are never stored
US Gallons
0.2642 gal
≈ 1.0000 litres
Density: 3.78541 kg/gal
This tool provides general unit conversions for everyday and educational use. For regulated, legal, or scientific applications, verify conversion factors against the applicable official standard.
About the Kilogram to Gallon Converter
The kilogram to gallon converter works out the volume of a known mass of liquid. It divides the mass by the liquid’s density, so the result depends on what you are measuring: 1 kg of water is about 0.264 US gallons, while 1 kg of olive oil takes up more space because oil is less dense. Densities are typical values at room temperature.
How to use it
- 1Choose kilograms → gallons or gallons → kilograms.
- 2Enter the amount and select the liquid.
- 3Read the converted value.
- 4Copy, share or print the result with the buttons below it.
Worked example
10 kg of water ÷ 3.785 kg per gallon ≈ 2.64 US gallons.
How it works
Formula
Gallons = Kilograms ÷ Density (kg/gal)
Density of water
Water at 20°C: density ≈ 1 kg/L = 3.785 kg/gal. Density decreases slightly with temperature.
Common use cases
- Converting bulk liquid orders
- Estimating tank fill levels from weight
- Lab and industrial calculations
Frequently asked questions
A:At 20°C, 1 kg of water = 0.2642 US gallons ≈ 1 litre.
A:Volume and mass are related by density (mass = volume × density). Different liquids have different molecular masses and packing, so their densities vary significantly.
Reviewed for accuracy · Last updated October 7, 2026
Conversion factors are based on internationally defined SI units and standard metric/imperial equivalence tables.
CalcWisee Editorial Team
Calculator development and formula review
CalcWisee is an independent site founded by Ayman. Every calculator is built from a published formula or official definition, tested against hand-worked examples before it goes live, and corrected promptly when a reader reports an issue to ayman@calcwisee.com.
Expertise: Financial mathematics, Health and fitness formulas, Applied mathematics, Unit conversion standards
References & sources
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