Volume Converter
Convert volume
Convert volume Runs locally in your browser
About the
The Volume Converter converts between litres, millilitres, cubic metres, gallons, quarts, pints, cups, fluid ounces and tablespoons, with the litre as the reference unit. Both the US and the UK gallon are included, because they differ by about twenty percent and mixing them up is the most common error in any recipe or fuel calculation. Use it when a recipe, a tank capacity or a shipping figure arrives in a unit you do not use.
Where people use the
- Converting a recipe between US and metric measures.
- Working out a tank or container capacity.
- Comparing fuel economy or consumption figures quoted in different units.
- Checking a shipping volume against a quoted limit.
How to use the
- 1
Enter a value
Type into either field. Conversion is live in both directions.
- 2
Choose the units
Pick a from unit and a to unit. Litres to US gallons is the default.
- 3
Watch which gallon you pick
Gallons (US) and Gallons (UK) are separate entries. Check which one the source means.
- 4
Swap to go back
Reverse the two units to convert the other way without retyping.
Tips and best practices
- Always check whether a gallon is US or UK; they differ by twenty percent.
- A cubic metre is exactly a thousand litres.
- Type into either field; both directions convert live.
Frequently asked questions
What is the difference between a US and a UK gallon?
A US gallon is 3.785 litres and a UK gallon is 4.546 litres. The UK gallon is about twenty percent larger, so picking the wrong one is a noticeable error.
Are fluid ounces the same as ounces of weight?
No. A fluid ounce is a volume, about 29.57 millilitres. An ounce of weight is a different unit entirely, and the two only coincide for water by coincidence of definition.
How many cups are in a litre?
About 4.23 US cups. Note that a US cup, a legal US cup and a metric cup differ slightly, so baking recipes converted between systems can drift.
Can it convert cubic metres?
Yes. A cubic metre is a thousand litres, which makes it the natural unit for tanks and shipping volumes.