How many gallons is 300 lbs?
How many gallons is 300 lbs?
Answer
The question names no substance, so the answer above is for water — the usual reference, taken at 20 °C (68 °F). Other liquids fill a different number of gallons at the same weight: across the table below 300 lbs runs from 34.9 gallons (milk) to 70.8 gallons (propane).
In imperial (UK) gallons of 4.54609 L instead of 3.785411784 L, 300 lbs of water would be 30 UK gallons.
How the volume of 300 lbs of water was worked out
A US gallon is exactly 3.785411784 liters and a pound is exactly 0.45359237 kilograms: the weight becomes kilograms, and the density turns kilograms into liters — and the liters become gallons.
300 lb × 0.45359237 ÷ (0.998 kg/L × 3.785411784)
≈36 US gallons
(thirty-six gallons)
The density comes from FAO/INFOODS Density Database v2.0: liquid water at 20 °C; rounding to 1.00 kg/L is fine for everyday use.
The other way round: what one US gallon of this weighs
This page starts from a weight and answers in gallons. The opposite question — how much a given number of gallons weighs — is what the gallons to pounds calculator is for, and in metric units the same question is liters to kilograms. All of them read one density table, so their numbers agree.
For water the density is 0.998 kg/L, so 300 lbs is 36 gallons — and one US gallon of it weighs 8.33 lbs.
Related Calculations
See Also
- Gallons to Pounds - How much a gallon of water, milk, gasoline, diesel, oil or propane weighs in pounds — by density
- Pounds to Liters - How many liters a pound of water, milk, oil or propane takes — by density
- Kilograms to Liters - How many liters are in a kilogram of water, honey, gasoline, sand and other substances — by density
- Liters to Gallons - Convert Liters to US Gallons
- Lbs to Kg - Convert Pounds to Kilograms
<a href="https://calculat.io/en/volume/lbs-to-gal/300--all-substances">300 lbs to gallons — 36 gallons of water, other liquids vary - Calculatio</a>
How many gallons 300 lbs of each substance takes
| Substance | Volume of 300 lbs | One US gallon weighs | Density, kg/L |
|---|---|---|---|
| Milk | 34.9 gallons | 8.6 lbs | 1.03 |
| Propane | 70.8 gallons | 4.24 lbs | 0.5076 |
| Vegetable oil | 39.1 gallons | 7.68 lbs | 0.92 |
| Water | 36 gallons | 8.33 lbs | 0.998 |