Volume Converter
Type any value — all units update instantly
What is volume conversion?
Volume measures three-dimensional space. The metric system uses litres and millilitres; the US/UK imperial system uses gallons, quarts, pints, cups, and fluid ounces. Conversions are essential in cooking, medicine, fuel, and science.
Formula used
Base unit: millilitre (mL)
1 Litre = 1,000 mL
1 US Gallon = 3,785.41 mL
1 UK Gallon = 4,546.09 mL
1 US Cup = 236.59 mL
1 Tablespoon = 14.79 mL
1 Teaspoon = 4.93 mL
How to use this calculator
- Type any value into any field
- All other units update instantly
Example
Common cooking conversions:
| Metric | US Cups | Tablespoons |
|---|---|---|
| 250 mL | 1.06 cups | 16.9 tbsp |
| 500 mL | 2.11 cups | 33.8 tbsp |
| 1 Litre | 4.23 cups | 67.6 tbsp |
Petrol: 40 litres = 10.57 US gallons = 8.8 UK gallons
Frequently asked questions
1 US gallon = 3.785L. 1 UK gallon = 4.546L. They differ by ~20%. Car fuel economy 'mpg' means different things in the US vs UK.
1 litre = 4.227 US cups. In cooking, 4 cups is often used for simplicity.
1 teaspoon ≈ 5 mL. Used for medication dosages and baking recipes.