Convert liters, gallons, milliliters, cups, cubic meters, cubic feet and more.
Volume measures the amount of space a liquid, gas, or solid occupies. In everyday use this usually means liters, milliliters, gallons, cups, pints, and fluid ounces. In engineering or construction it may mean cubic meters, cubic feet, or cubic yards.
For kitchen-friendly conversions, the Recipe Measures Calculator may be a better fit, while surface calculations belong in the Area Converter.
This free volume converter helps convert between metric, imperial, and US customary volume units. It is useful for cooking, fuel measurements, liquids, construction, shipping, science, and many everyday calculations.
Common searches include liters to gallons, gallons to liters, milliliters to ounces, cups to mL, and cubic feet to cubic meters. This page provides both the converter and a practical reference guide.
Volume is the amount of three-dimensional space something occupies. Liquids are commonly measured in liters, milliliters, cups, or gallons, while larger spaces may be measured in cubic meters, cubic feet, or cubic yards.
Volume is not the same as area. Area measures a flat surface, while volume includes depth or height as well.
Some volume units differ between the United States and the United Kingdom. The gallon is the best-known example, but pints and fluid ounces also differ.
| Unit | US value | UK / Imperial value |
|---|---|---|
| 1 gallon | 3.78541 L | 4.54609 L |
| 1 pint | 473.176 mL | 568.261 mL |
| 1 fluid ounce | 29.5735 mL | 28.4131 mL |
This matters in recipes, beverage measurements, and any comparison between US and UK liquid quantities.
| Conversion | Value |
|---|---|
| 1 liter to milliliters | 1,000 mL |
| 1 US gallon to liters | 3.78541 L |
| 1 liter to US gallons | 0.264172 gal |
| 1 US cup to milliliters | 236.588 mL |
| 1 liter to US fluid ounces | 33.814 fl oz |
| 1 cubic meter to liters | 1,000 L |
| 1 cubic meter to cubic feet | 35.3147 ft³ |
| Unit | Equivalent |
|---|---|
| 1 mL | 0.001 L |
| 1 L | 1,000 mL |
| 1 US gallon | 3.78541 L |
| 1 imperial gallon | 4.54609 L |
| 1 cubic foot | 28.3168 L |
| 1 cubic yard | 764.555 L |
| 1 cubic meter | 1,000 L |
Volume and weight are not the same. One liter of water weighs about one kilogram, but that relationship changes for oil, flour, sugar, and many other substances because density differs.
If mass matters rather than space, use the Weight Converter. For kitchen-style measure changes, try the Recipe Measures Calculator.
One US gallon equals about 3.78541 liters.
One liter equals 1,000 milliliters.
A UK gallon is larger than a US gallon. One imperial gallon is about 4.54609 liters, while one US gallon is about 3.78541 liters.
It depends on the cup standard being used. A US cup differs from metric and imperial-style cup measurements, so recipe context matters.
No. Volume measures space, while weight measures mass. The link between them depends on density.
For related conversions, try the Recipe Measures Calculator, Weight Converter, Area Converter, and Fuel Economy Converter.
Practical note
For recipe work, cups and fluid ounces can mean different things depending on country and context. Double-check whether the source recipe uses US or UK/imperial measurements.