Weight · Milk
How much does milk weigh?
8.6 lb/gal · 1.03 kg/L · specific gravity 1.031.
—
| Volume | Pounds | Kilograms |
|---|---|---|
| 1 gal | 9 lb | 4 kg |
| 5 gal | 43 lb | 20 kg |
| 55 gal | 473 lb | 215 kg |
| 100 gal | 860 lb | 390 kg |
| 275 gal | 2,365 lb | 1,073 kg |
| 330 gal | 2,838 lb | 1,287 kg |
| 500 gal | 4,300 lb | 1,950 kg |
| 1,000 gal | 8,600 lb | 3,901 kg |
| 5,000 gal | 43,000 lb | 19,504 kg |
Basis
Whole milk at ~68°F; USDA dairy references. Fat content moves it only slightly. Liquid weight excludes the container — add tare weight for transport math. Matching tank charts: 55 gal tank · 275 gal tank · 330 gal tank · 500 gal tank · 1000 gal tank.
FAQ
How much does a gallon of milk weigh?
8.6 lb/gal. That is 1.03 kg per litre (SG 1.031).
How much does a 55-gallon drum of milk weigh?
About 473 lb of liquid, plus roughly 40–50 lb for a steel drum. A brim-full drum actually holds ~57.7 gal — see the drum chart.
Does temperature change this?
Yes — liquids expand when warm. Hydrocarbons move roughly 0.4% per 10°F; the figure here is the standard reference temperature value.