Volume Converter
Convert cubic meters (m³), liters (L), milliliters (mL), cubic centimeters (cm³), cubic inches (in³), cubic feet (ft³), cubic yards (yd³), US gallons (gal), US quarts (qt), US pints (pt), US fluid ounces (fl oz) and UK gallons (gal).
Select Your Unit
About This Converter
This volume converter covers 12 units across metric and US/UK imperial systems, using exact NIST conversion factors like 1 US gallon = 231 in³ = 3.785411784 L and 1 UK gallon = 4.54609 L. Every value passes through a cubic-meter base for full precision. It is useful for cooking and baking when recipes mix cups and milliliters, for aquarium hobbyists sizing tanks in gallons and liters, or for engineers working with fluid capacities across international standards.
FAQ
US gallon vs UK gallon — what's the difference?
The US gallon is exactly 3.785 411 784 L. The UK (imperial) gallon is exactly 4.546 09 L — about 20% larger.
Is 1 mL the same as 1 cm³?
Yes, exactly. 1 mL = 1 cm³ = 1×10⁻⁶ m³.
Where does 231 cubic inches come from?
The modern US gallon is defined as 231 in³, which yields the exact liter conversion above.
Tips for entering values
Select the unit first, then enter a value once — every tile updates automatically. Large or tiny results may show in scientific notation for readability.