Volume Converter
Convert liquid volume between liters, milliliters, cubic meters, and US customary units (gallons, quarts, pints, cups, and fluid ounces). The customary units here are US liquid measures, not UK imperial ones.
Formula: multiply the source value by 0.26417205
Quick Conversions
About this tool
Liquid volume here uses the litre and US customary cups, pints, quarts, and gallons.
How to use it
Type a volume, select the original unit and the target unit. Results update live.
value_to = value_from × (from_in_liters / to_in_liters)
Examples
1 US gallon to liters
1 × 3.785411784 = 3.785411784 L.
2 L to cup
2 × 4.22675 = 8.45351 cup.
12 fl oz to mL
12 × 29.5735 = 354.882 mL.
Every unit expressed in liters
| Unit | Equal to (L) |
|---|---|
| 1 liter (L) | 1 |
| 1 milliliter (mL) | 0.001 |
| 1 cubic meter (m³) | 1,000 |
| 1 US gallon (gal) | 3.785411784 |
| 1 US quart (qt) | 0.946352946 |
| 1 US pint (pt) | 0.473176473 |
| 1 US cup (cup) | 0.2365882365 |
| 1 US fluid ounce (fl oz) | 0.0295735296 |
FAQ
US or imperial gallon?
US liquid gallon (3.785411784 L).
How many cups in a pint?
2 US cups per US pint.
Is the conversion exact?
Yes, before rounding. The US gallon is defined as exactly 231 cubic inches (3.785411784 L), and the quart, pint, cup, and fluid ounce are exact fractions of it.
Can I use this for UK (imperial) gallons?
No. An imperial gallon is 4.54609 L, about 20% larger than the US gallon used here, so the results would be wrong for UK measures.