Volume converter
Convert volume between litres, cubic metres and gallons.
Volume converter
Fill in the fields and the result will appear here automatically.
Converts volume between millilitres, litres, cubic centimetres, metres and feet, plus US and imperial gallons. The US and UK gallons differ by about 20%, so the list keeps them separate.
How it works
Formula and logic
Every unit has an exact factor to the cubic metre.
Example
A US gallon is 3.785 litres and an imperial gallon is 4.546 litres.
Fields and units
- Volume — in the selected source unit
- From unit — list option
- To unit — list option
How to use
- — Enter the value.
- — Pick the source unit.
- — Pick the target unit.
Method and limitations
- Calculation method
- Formula and logic
- Data or methodology source
- NIST: SI volume units NIST: conversion-factor tables, Appendix B.9
- Limitation
- The result is a rounded unit conversion. Check the entered value and selected units.
FAQ
How do US and imperial gallons differ?
They are historically different measures: 3.785 litres versus 4.546. The 20% gap is easy to miss in a recipe or a manual.
Is a litre the same as a cubic decimetre?
Yes, exactly. The litre is defined as a cubic decimetre, or 0.001 m³.
Is a millilitre the same as a cubic centimetre?
Yes, exactly. Both equal 10⁻⁶ m³.
Are cooking measures included?
Cups and spoons are not: their volume varies by country. Those need a dedicated cooking converter.