Last updated: September 16, 2026
Quick answer: Use the tool above to convert between any volume units. Choose a from-unit and a to-unit, enter a value, and the result updates instantly.
Volume Converter
Convert volume and capacity units, including US and UK measures, with precise results.
Volume measures how much space a liquid or container holds. This converter covers metric units (liters, milliliters), US customary units (gallons, cups, fluid ounces) and their UK equivalents, which differ in size.
How the volume converter works
Each volume unit is stored as its size in liters (the base unit), so any unit converts to any other in a single step.
Every unit is defined relative to a base unit (L), so any unit can convert to any other in one step.
Step-by-step
- Pick the unit you're converting from.
- Pick the unit you're converting to.
- Enter the value.
- Read the result, and adjust precision if needed.
Worked example
Convert 10 liters to US gallons:
So 10 liters is about 2.64 US gallons.
Volume units reference (relative to the liter)
| Unit | Equivalent in L |
|---|---|
| Liter (L) | 1 L |
| Milliliter (mL) | 0.001 L |
| Cubic meter (m³) | 1,000 L |
| Cubic centimeter (cm³) | 0.001 L |
| Gallon US | 3.78541 L |
| Gallon UK | 4.54609 L |
| Quart US | 0.946353 L |
| Pint US | 0.473176 L |
| Cup US | 0.236588 L |
| Fluid ounce US | 0.0295735 L |
| Tablespoon | 0.0147868 L |
| Teaspoon | 0.00492892 L |
Understanding your result
Results are exact to the precision you select; pick more significant digits for scientific work or fewer for everyday use.
Accuracy & limitations
US and UK gallons, pints and fluid ounces are different sizes — a US gallon is 3.78541 L, a UK gallon is 4.54609 L. Always check which system a figure uses.
Frequently asked questions
What is the difference between a US and UK gallon?
A US gallon is 3.78541 liters; a UK (imperial) gallon is 4.54609 liters — about 20% larger.
How many milliliters are in a liter?
There are exactly 1,000 milliliters in one liter.
How many liters in a US gallon?
One US gallon is 3.78541 liters.
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Creator
Shakeel Muzaffar is the Founder and Editor-in-Chief of MultiCalculators.com, bringing over 15 years of experience in digital publishing, product strategy, and online tool development. He leads the platform's editorial vision, ensuring every calculator meets strict standards for accuracy, usability, and real-world value. Shakeel personally oversees content quality, formula verification workflows, and the platform's commitment to publishing tools that are genuinely useful for students, professionals, and everyday users worldwide.
Areas of Expertise: Editorial Leadership, Digital Publishing, Product Strategy, Online Calculators, Web Standards
