Volume Converter
Convert between common volume units including metric and US customary units. Supports milliliters, liters, gallons, cups, and more.
About this Calculator
Convert between common volume units including metric and US customary units. Supports milliliters, liters, gallons, cups, and more.
Formula & Calculations
Formula
Result = Input value × (Conversion factor from unit / Conversion factor to unit), normalized to litersWhere:
- mL=Milliliter (1 L = 1000 mL)
- L=Liter (base unit)
- m³=Cubic meter (1 m³ = 1000 L)
- gal=US gallon (1 gal = 3.78541 L)
- qt=US quart (1 qt = 0.946353 L)
- pt=US pint (1 pt = 0.473176 L)
- cup=US cup (1 cup = 0.236588 L)
- fl oz=US fluid ounce (1 fl oz = 0.0295735 L)
- ft³=Cubic foot (1 ft³ = 28.3168 L)
- in³=Cubic inch (1 in³ = 0.0163871 L)
Assumptions
- All US customary units use US definitions (not Imperial UK).
- Conversions are calculated via the liter as an intermediate base unit.
Calculation Examples
Example 1
Inputs:2 gallons to liters
Result:7.5708 L
2 × 3.78541 = 7.57082 liters.
Example 2
Inputs:500 milliliters to fluid ounces
Result:16.907 fl oz
500 mL = 0.5 L, then 0.5 / 0.0295735 = 16.907 fl oz.
Frequently Asked Questions
Are US and UK gallons the same?
No. This calculator uses US customary units. A US gallon is approximately 3.785 liters, while a UK (Imperial) gallon is about 4.546 liters.
Can I convert cubic measurements to liquid volumes?
Yes. Cubic meters, cubic feet, and cubic inches are all supported and convert directly through the liter base unit.