Converters
Volume Converter
Convert liters, gallons, cups, fluid ounces, and cubic units.
About This Tool
Convert volume and capacity values between metric, US customary, and imperial units while keeping similarly named systems distinct. The comparison table shows the same input across every supported unit, which is useful for recipes, liquid containers, shipping dimensions, laboratory references, and measurement checks. Pay particular attention to gallons, pints, and fluid ounces: US customary and imperial units with similar names are not the same size.
How To Use It
- Enter the volume value.
- Choose the unit you are converting from.
- Choose the target volume unit.
- Use Swap to reverse the conversion, or copy the numeric result.
Examples
Liters to US gallons
Enter 10, choose Liters as the starting unit and US gallons as the target unit to get about 2.6417205236 US gallons.
Milliliters to fluid ounces
Enter 500, choose Milliliters and US fluid ounces, and the result is about 16.9070112795 US fluid ounces. Check that US fluid ounces are actually the unit required before using the result.
Compare US and imperial gallons
One US gallon is 3.785411784 liters, while one imperial gallon is 4.54609 liters. Select the named system rather than treating the word gallon as a universal unit.
Useful Notes
Supported units
The converter includes liters, milliliters, cubic meters, cubic centimeters, US gallons, quarts, pints, cups, fluid ounces, imperial gallons, and imperial pints.
US and imperial units
US gallons and pints differ from their imperial counterparts, and US fluid ounces differ from imperial fluid ounces. This tool labels systems separately where supported, so verify the source unit instead of assuming a familiar unit name has one universal size.
Volume and capacity describe related measurements
Volume describes three-dimensional space, while capacity commonly describes how much a container can hold. Units such as liters and gallons are often used for capacity, while cubic meters and cubic centimeters express geometric volume.
Cubic length conversions grow quickly
A cubic unit scales in three dimensions. For example, one cubic meter equals 1,000 liters and 1,000,000 cubic centimeters, so converting cubic measurements is not the same as applying a simple length conversion once.
Recipe units can vary by convention
Cup and spoon sizes are not identical in every country or recipe standard. Use the unit convention expected by the recipe or source rather than assuming every informal kitchen measure has the same volume.
FAQ
How many liters are in a US gallon?
One US gallon equals 3.785411784 liters.
Are milliliters and cubic centimeters the same?
Yes. One milliliter equals one cubic centimeter, so the converted values match.
Can I use decimals?
Yes. Decimal inputs are supported, such as 0.5 liters, 2.75 cups, or 1.25 gallons.
Is a US gallon the same as an imperial gallon?
No. One US gallon is 3.785411784 liters, while one imperial gallon is 4.54609 liters. Choose the correct named gallon before converting.
Why can cup conversions differ between websites or recipes?
Different countries and recipe standards can define a cup differently. Confirm the convention used by the source when precision matters.
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