Kg to Gallons Calculator
Convert kilograms to gallons by factoring in the liquid's density. Since kilograms measure weight and gallons measure volume, the conversion depends on what liquid you are working with.
You cannot directly convert kilograms to gallons without knowing the density of the liquid, because kilograms measure mass and gallons measure volume. The formula is:
Formula: gallons = (kg / density) / 3.78541
First, divide the mass by the liquid's density (in kg/L) to get liters, then divide by 3.78541 to convert liters to US gallons.
Density of Common Liquids:
| Liquid | Density (kg/L) | 1 kg = US Gallons |
|---|---|---|
| Water | 1.00 | 0.2642 gal |
| Milk (whole) | 1.03 | 0.2564 gal |
| Olive oil | 0.92 | 0.2872 gal |
| Vegetable oil | 0.91 | 0.2903 gal |
| Gasoline | 0.80 | 0.3302 gal |
| Ethanol | 0.79 | 0.3344 gal |
| Diesel fuel | 0.85 | 0.3108 gal |
| Honey | 1.42 | 0.1861 gal |
| Mercury | 13.60 | 0.0194 gal |
US vs Imperial gallons: A US gallon is 3.78541 liters, while an imperial (UK) gallon is 4.54609 liters. The imperial gallon is about 20% larger, so make sure you know which system you need.