Convert US, imperial (UK) and US dry gallons to litres, quarts, pints, cups, fluid ounces, cubic feet and cubic metres at once. The result is also split into gallons, quarts and cups, and a price per gallon can be turned into a price per litre.
1 US gal = 3.785 L · 1 UK gal = 4.546 L
The US liquid gallon is defined as exactly 231 cubic inches, the old English wine gallon. It is 3.785411784 L. The imperial gallon was introduced in Britain in 1824 as the volume of 10 lb of water, and since 1985 it has been defined as exactly 4.54609 L. It is about 20% larger than the US gallon. The rarely seen US dry gallon (268.8025 in³, 4.405 L) survives mainly as one-eighth of a bushel for grain and produce.
| Gallon | Litres | Cubic inches | US gallons |
|---|---|---|---|
| US liquid gallon | 3.785412 | 231 | 1 |
| Imperial (UK) gallon | 4.54609 | 277.42 | 1.20095 |
| US dry gallon | 4.40488 | 268.8025 | 1.16365 |
Gallons are still used in everyday life in the US, and for fuel economy and some drinks and garden products in the UK. Canada and Ireland officially use litres, although older people and older documents may still quote imperial gallons.
Both systems split a gallon into 4 quarts and 8 pints. They part ways at the fluid ounce: a US pint holds 16 fl oz, a UK pint 20.
| In 1 gallon | US gallon | UK gallon |
|---|---|---|
| Quarts | 4 | 4 |
| Pints | 8 | 8 |
| Cups | 16 (US cups) | no standard UK cup |
| Fluid ounces | 128 | 160 |
| Tablespoons | 256 | — |
| Teaspoons | 768 | — |
The converter shows any amount split into US gallons, quarts, pints, cups and ounces. For example, 2.3 US gal is 2 gal, 1 qt and 6.4 fl oz. To measure that with jugs, you need two gallons, a quart and a little under a cup.
US pumps show the price per US gallon, while most of the world shows it per litre. How does $3.50 a gallon compare with a litre price?
Step 1: Divide by litres per US gallon
Step 2: Going the other way, a UK price of 1.40 per litre
$3.50 per US gallon is about $0.92 per litre. Convert the currency separately, using the exchange rate on the day. The price calculator below does the unit part:
| Container | Sold as | Litres | US gal | UK gal |
|---|---|---|---|---|
| Standard steel drum | 55 US gal | 208.2 | 55 | 45.8 |
| IBC tote | 1,000 L (also sold as 275 or 330 US gal) | 1,000 | 264.17 | 219.97 |
| Home water heater | 50 US gal | 189.3 | 50 | 41.63 |
| Hardware-store bucket | 5 US gal | 18.9 | 5 | 4.16 |
| Jerry can | 20 L | 20 | 5.28 | 4.4 |
| Family car fuel tank | about 50 L | 50 | 13.21 | 11 |
| US milk jug | 1 US gal | 3.8 | 1 | 0.83 |
| UK 4-pint milk bottle | 4 UK pints | 2.3 | 0.6 | 0.5 |
For water bills in hundreds of cubic feet, use the CCF to gallons converter. To find a tank's volume from its dimensions, use the volume converter.
Because the UK gallon is 20% bigger, the same car gets a 20% higher miles-per-gallon figure in the UK. A car rated at 50 mpg in a British review does about 41.6 mpg in US terms. Neither figure is wrong; they use different gallons.
A US gallon is 4 quarts, 8 pints, 16 cups or 128 fluid ounces. A UK gallon is also 4 quarts and 8 pints, but 160 UK fluid ounces.
264.17 US gallons or 219.97 UK gallons. A cubic foot holds 7.48 US gallons.
Almost nothing on its own today. It is 4.405 L and defines the US bushel (8 dry gallons) and dry pints and quarts used for berries and produce.
About 8.34 lb (3.79 kg) for a US gallon and about 10 lb (4.54 kg) for a UK gallon. For other liquids, use the gallons to pounds converter.
Assume the US gallon for anything sold or written in the US, and the imperial gallon for older British, Irish, Canadian or Australian sources.
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