Metric to US and imperial volume converter

Convert cubic metres and litres to cubic inches, feet and yards, and to US and UK liquid measures: fluid ounce, cup, pint, quart and gallon.

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Amount

From

US gallon

0.2641720524 US gal

Equivalents

US measures derive from the 231 in³ gallon and UK measures from the imperial gallon of exactly 4.54609 L:

US gallon = 3.785411784 L; quart = 1/4; pint = 1/8; cup = 1/16; fluid ounce = 1/128 (≈ 29.57 mL)
UK gallon = 4.54609 L; quart = 1/4; pint = 1/8 (≈ 568 mL); cup = 1/16; fluid ounce = 1/160 (≈ 28.41 mL)
1 in³ = 16.387064 cm³; 1 ft³ ≈ 28.317 L; 1 yd³ ≈ 0.7646 m³

Use cases

1
Type the amount
Decimals with a dot or a comma are accepted, as are negative values.
2
Pick the units
Choose the source and target units; the result and the equivalents table update instantly.

The US cup is the customary 8 fl oz cup (≈ 236.6 mL); US nutrition labelling uses 240 mL and many metric recipes use 250 mL.
The UK cup is half an imperial pint (≈ 284 mL), rarely used today.
Results use 10 significant figures; very large or very small values are shown in scientific notation (e.g. 1e-10).

How many litres are in a gallon?

The US gallon is 3.785 L; the UK imperial gallon is 4.546 L.

Are UK and US pints the same?

No: the UK pint is about 568 mL and the US pint about 473 mL.