Volume Converter
Convert between liters, gallons, cups, milliliters, and other volume units.
1 L = 0.264172 Gallon (US)
About the volume converter
Convert volume across metric, imperial, and US customary systems. The SI derived unit is the cubic meter, but liters are the everyday metric volume. US fluid measurements differ from imperial measurements used in the UK — a US gallon is about 3.785 L while a UK gallon is about 4.546 L.
Common conversions
Frequently asked questions
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How many liters are in a US gallon?
One US gallon equals approximately 3.78541 liters.
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How many milliliters are in a teaspoon?
One US teaspoon is approximately 4.929 ml; one metric teaspoon is exactly 5 ml.
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Is a US cup the same as a UK cup?
No. A US legal cup is 240 ml, a US customary cup is 236.588 ml, a UK metric cup is 250 ml, and an imperial cup is approximately 284 ml.
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What is the SI unit of volume?
The cubic meter (m³). The liter (1 dm³) is widely used but is not part of the SI base set.
More common converters
Complete list of volume units
- Liter [L]