Gallons to Pounds Converter

Easily convert gallons to pounds with our accurate gallons to pounds converter. Learn the gallons to pound formula while you are at it. Try it now!

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
Result8.3454 lb1 gal of water
Density used1 g/ml1,000 kg/m³
1 gal of water8.3454 lb

1 gal of…

SubstanceDensity1 gal weighs / measures
Water1 g/ml8.3454 lb
Milk (whole)1.03 g/ml8.5958 lb
Flour (all-purpose)0.529 g/ml4.4147 lb
Sugar (granulated)0.845 g/ml7.0519 lb
Butter0.911 g/ml7.6027 lb
Vegetable oil0.92 g/ml7.6778 lb
Honey1.42 g/ml11.8505 lb
Table salt1.217 g/ml10.1564 lb
Rice (uncooked)0.85 g/ml7.0936 lb

Why gallon (US) to pound needs a substance

Gallon (US)s measure volume and pounds 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.