Free online volume unit converter for 18 metric, US and UK units. Enter a value and get precise results instantly, plus a full unit conversion table
Microliters, milliliters, cubic centimeters, liters, cubic meters, gallons, pints, quarts, fluid ounces, oil barrels, cubic feet and more in one tool
Convert any unit to any other unit in real time, and swap the conversion direction with one click
See your value expressed in all 18 units at once - handy for comparing and reference
Choose from 0 to 6 decimal places with automatic thousand separators for readability
Invalid or negative input is detected and flagged instantly so results stay reliable
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Type the amount you want to convert in the value field. Integers and decimals are both supported, e.g. 10 or 2.5. Invalid or negative input is flagged automatically.
Pick the unit of your input value from the "From" dropdown. Units are grouped by metric, US/UK liquid and imperial volume categories for fast selection.
Pick the desired output unit from the "To" dropdown and the conversion updates instantly. Use the swap button to reverse the direction quickly.
The area below lists your value in all 18 units for easy comparison. Click "Copy Result" to share the current conversion, or copy any row individually.
US recipes often use gallons, quarts and fluid ounces - convert them to milliliters or liters for accurate results
Concrete volume and tank capacities are quoted in cubic meters - convert to liters for mixing and purchasing
Fuel tanks, engine oil and coolant are measured in gallons or liters depending on region - convert across vehicles easily
Potting soil, pesticide dilution and paint mixing use gallons, quarts and liters - convert to avoid dosing errors
Milliliters, microliters and cubic centimeters are standard in pipettes and measuring cylinders for experiments and classes
Imported drinks and products are labeled in fluid ounces or gallons - convert to milliliters or liters to compare
Volume is the three-dimensional space an object occupies, measured in units such as cubic meters and cubic centimeters. Capacity is how much a container can hold, measured in liters and milliliters. The two systems convert cleanly: 1 cubic meter = 1000 liters and 1 cubic centimeter = 1 milliliter, which is why this tool converts solid volume and liquid capacity units together.
Metric volume units are built around the liter: 1 liter (L) = 10 deciliters = 1000 milliliters (mL) = 1000 cubic centimeters (cm³) = 1 cubic decimeter (dm³) = 0.001 cubic meters (m³). Neighboring units are usually 1000-fold steps: 1 cubic meter = 1000 liters = 1,000,000 milliliters.
US and UK systems share names but not sizes: a US fluid ounce is 29.5735 mL while the UK fluid ounce is 28.4131 mL; a US pint is 473.2 mL vs 568.3 mL in the UK; a US gallon is 3.785 L vs 4.546 L in the UK. The US also has dry measure units (a dry quart is 1.101 L). Differences between systems can reach about 20%, so always identify the system before converting.
1 cubic meter = 1000 liters; 1 liter = 1000 milliliters; 1 US gallon ≈ 3.785 liters; 1 UK gallon ≈ 4.546 liters; 1 US fluid ounce ≈ 29.57 mL; 1 US pint ≈ 0.473 L; 1 cubic inch ≈ 16.39 mL; 1 cubic foot ≈ 28.32 liters; 1 cubic yard ≈ 764.55 liters; 1 US oil barrel = 42 US gallons ≈ 158.99 liters. Bookmark this tool to look up any volume conversion online.