Volume Converter

Convert between liters, gallons, milliliters, cups, fluid ounces, pints, and quarts. Instant, accurate, no sign-up.

Volume Converter

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Volume Converter Guide

Convert volume and capacity between metric and US customary units — great for cooking, fuel, and science. Enter a value, choose the units, and the result updates instantly.

Common Volume Conversions

1 US gallon = 3.78541 L · 1 gallon = 4 quarts · 1 cup = 8 fl oz · 1 tablespoon = 3 teaspoons · 1 liter = 1000 mL.

How Do I Convert Liters to Gallons?

Each unit is defined against the liter. To convert liters to US gallons, divide by 3.78541; to go the other way, multiply. For example, 10 L ÷ 3.78541 = 2.64 gallons.

Quick Reference Table

FromToMultiply by
Gallons (US)Liters3.78541
LitersGallons (US)0.264172
Cups (US)Milliliters236.588
Fluid ouncesMilliliters29.5735

Note: these are US customary units. Related: Weight Converter, Temperature Converter, and Brine Calculator.

Frequently Asked Questions

How do I convert liters to gallons?
Divide the liters by 3.78541 for US gallons.

How many cups are in a liter?
About 4.23 US cups.

How many fluid ounces are in a cup?
Eight US fluid ounces.

How many quarts are in a gallon?
Exactly four.

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