Gallons to Tons Converter

Calculate the tons for any gallons of substance using the gallons to tons converter.

Density decides the answer — a cup of flour weighs far less than a cup of honey.
g/ml
Used when “Custom density” is selected.
Clear
Result0.0041727 ton1 gal of water
Density used1 g/ml1,000 kg/m³
1 gal of water0.0041727 ton

1 gal of…

SubstanceDensity1 gal weighs / measures
Water1 g/ml0.0041727 ton
Milk (whole)1.03 g/ml0.00429788 ton
Flour (all-purpose)0.529 g/ml0.00220736 ton
Sugar (granulated)0.845 g/ml0.00352593 ton
Butter0.911 g/ml0.00380133 ton
Vegetable oil0.92 g/ml0.00383889 ton
Honey1.42 g/ml0.00592524 ton
Table salt1.217 g/ml0.00507818 ton
Rice (uncooked)0.85 g/ml0.0035468 ton

Why gallon (US) to short ton (US) needs a substance

Gallon (US)s measure volume and short ton (US)s 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.