Volume Converter
The Volume Converter handles liquids and capacity across metric and US customary units — milliliters, liters, cubic meters, teaspoons, tablespoons, fluid ounces, cups, pints, quarts and gallons. Perfect for recipes, fuel and storage calculations.
What this means
Volume measures how much space a liquid or container takes up. Metric volume centers on the liter; US cooking and fuel use cups, pints, quarts and gallons. The converter applies the exact ratio between any two units.
How we calculate it
Formula
Result = Value × (factor of source unit) ÷ (factor of target unit), where each unit is defined exactly against the liter.Worked example
How many liters is 1 US gallon?
- 11 gal = 3.785411784 L exactly
- 2Factor = 3.785411784 ÷ 1 = 3.785411784
- 31 US gallon = 3.7854 liters
Important assumptions
- Uses US customary units (US gallon, US cup). A UK (imperial) gallon is about 4.546 L, which is larger.
Frequently asked questions
How many liters are in a gallon?
A US gallon equals 3.78541 liters. An imperial (UK) gallon is 4.54609 liters.
How many ml are in a cup?
A US cup equals 236.588 ml, about 240 ml in recipes.
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