Volume & Capacity Converter
Convert liquid and dry volume between Liters, US Gallons, Imperial Gallons, and fluid ounces. Convert between metric, US customary, and imperial units using documented conversion factors and high-precision decimal calculations.
Live Interactive Calculator
milliliter = liter × 1000Popular Volume & Capacity Conversions
Explore dedicated guides with exact formulas, conversion factors, worked calculation steps, and quick reference tables.
Liters to US Gallons
Convert Liter to US Gallon with exact formula and quick lookup tables.
US Gallons to Liters
Convert US Gallon to Liter with exact formula and quick lookup tables.
Milliliters to US Fluid Ounces
Convert Milliliter to US Fluid Ounce with exact formula and quick lookup tables.
US Fluid Ounces to Milliliters
Convert US Fluid Ounce to Milliliter with exact formula and quick lookup tables.
US Cups to Milliliters
Convert US Cup to Milliliter with exact formula and quick lookup tables.
US Fluid Ounces to US Cups
Convert US Fluid Ounce to US Cup with exact formula and quick lookup tables.
US Cups to US Fluid Ounces
Convert US Cup to US Fluid Ounce with exact formula and quick lookup tables.
Major Volume & Capacity Units & Definitions
Standard measurement units, measurement systems, and documented sources.
Liter
LA metric unit of volume equal to 1 cubic decimeter (0.001 cubic meters or 1,000 cubic centimeters). Recognized internationally for liquid capacity.
Milliliter
mLA metric unit of volume equal to one-thousandth of a liter (1 cm³). Standard in medicine, chemistry, and culinary ingredients worldwide.
US Gallon
galThe US liquid gallon is defined legally as exactly 231 cubic inches, which equals 3.785411784 liters. Note: It is smaller than the Imperial gallon (4.546 L).
Imperial Gallon
gal (UK)The UK Imperial gallon is defined as exactly 4.54609 liters (historically the volume of 10 pounds of water at 62°F). About 20% larger than the US gallon.
US Fluid Ounce
fl ozThe US customary fluid ounce is defined as 1/128 of a US liquid gallon, which equals exactly 29.5735295625 milliliters. Distinct from weight ounces.
US Cup
cupA customary volume unit in the United States equal to 8 US fluid ounces or 1/16 US gallon (approx 236.59 mL). Standard in American cooking recipes.