From teaspoons to cubic metres
Recipes use cups and tablespoons, fuel is sold in litres or gallons, and water tanks are measured in cubic metres or litres. Enter a volume and choose the units to convert instantly, with every unit listed underneath.
US and UK gallons differ (3.785 L vs 4.546 L), and US cooking measures are used for cups and spoons, so the units are labelled clearly.
How to convert volume
- 1
Enter the volume
Any number.
- 2
Choose the units
From and to.
- 3
Read the result
Or check the full table.
Key features
14 units
Metric, US, UK and cooking measures.
US vs UK gallons
Clearly separated.
Exact factors
Official definitions.
Every unit at once
Full conversion table.
Common uses
- Cooking: Cups and spoons to mL.
- Fuel: Gallons to litres.
- Water tanks: Cubic metres or cubic feet to litres.
Tips and good to know
- 1 cubic metre holds 1,000 litres — handy for sizing water tanks.
- Converting weight-based recipes? Use the Weight Converter.
Frequently asked questions
How many mL are in a cup?
A US cup is about 236.6 mL. Many recipes round it to 240 mL.
How many litres are in a gallon?
3.785 litres in a US gallon and 4.546 litres in a UK (imperial) gallon.
How many litres is 1 cubic metre?
Exactly 1,000 litres.