How it’s calculated
Volumes are converted through cubic meters. The US gallon is defined as exactly 231 cubic inches and the imperial (UK) gallon as exactly 4.54609 liters, so they differ by about 20%.
Example: a 5 US gallon bucket holds 5 × 3.785411784 = 18.927 L.
Frequently asked questions
How many liters are in a gallon?
A US gallon is exactly 3.785411784 liters. An imperial (UK) gallon is exactly 4.54609 liters.
How many gallons are in a cubic foot?
About 7.48052 US gallons, because a cubic foot is 1,728 in³ and a US gallon is 231 in³.
Is a liter bigger than a quart?
Slightly. A liter is about 1.0567 US liquid quarts.
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Sources
- NIST Handbook 44, Appendix C: General Tables of Units of Measurement — U.S. National Institute of Standards and Technology
- SI Units – Volume — U.S. National Institute of Standards and Technology
Formulas are taken from the free public references above. Results are provided “as is” for informational and educational purposes only. See our disclaimer.
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