gal to kg Converter
Our gal to kg converter will help you convert any quantity in gallons (gal) to kilograms (kg), and vice versa.
1 gal of…
| Substance | Density | 1 gal weighs / measures |
|---|---|---|
| Water | 1 g/ml | 3.7854 kg |
| Milk (whole) | 1.03 g/ml | 3.899 kg |
| Flour (all-purpose) | 0.529 g/ml | 2.0025 kg |
| Sugar (granulated) | 0.845 g/ml | 3.1987 kg |
| Butter | 0.911 g/ml | 3.4485 kg |
| Vegetable oil | 0.92 g/ml | 3.4826 kg |
| Honey | 1.42 g/ml | 5.3753 kg |
| Table salt | 1.217 g/ml | 4.6068 kg |
| Rice (uncooked) | 0.85 g/ml | 3.2176 kg |
Why gallon (US) to kilogram needs a substance
Gallon (US)s measure volume and kilograms measure weight, so there is no single conversion factor between them. What bridges the two is density — how much a given volume of that particular substance weighs:
mass = volume × density
Water is the easy case: it is almost exactly 1 g/ml, so 1 ml of water weighs 1 g and the numbers look identical. Nothing else behaves that way — flour is about half as dense, and honey is nearly half again as dense.
Using this for recipes
Pick the ingredient from the list and the conversion uses a typical density for it. Dry ingredients are the least predictable: scooping flour straight from the bag can pack in 20% more than spooning it in gently, which is exactly why baking recipes prefer weights. If you have a density from a supplier or a label, choose Custom density and enter it.
Densities here are typical values for guidance. For anything where precision matters, weigh it.