Volume Converter Guide: Litres, Gallons, Cups & More
Volume units are critical for cooking, chemistry, fuel, and construction. The US and UK use different versions of gallons, pints, and cups — making conversions essential.
Volume Unit Reference Table
| Unit | In mL | In Litres |
|---|---|---|
| 1 teaspoon (US) | 4.93 | 0.00493 |
| 1 tablespoon (US) | 14.79 | 0.0148 |
| 1 fl oz (US) | 29.57 | 0.0296 |
| 1 cup (US) | 236.59 | 0.237 |
| 1 pint (US) | 473.18 | 0.473 |
| 1 quart (US) | 946.35 | 0.946 |
| 1 gallon (US) | 3,785 | 3.785 |
| 1 gallon (UK) | 4,546 | 4.546 |
Frequently Asked Questions
How many millilitres in a cup?
1 US cup = 236.588 mL. 1 metric cup (Australia) = 250 mL. Cups are not standardised globally — always check whether a recipe uses US or metric cups. For most practical cooking, use 240 mL per US cup.
How many litres in a gallon?
1 US gallon = 3.785 litres. 1 UK (imperial) gallon = 4.546 litres. These are different! If a US car's fuel tank is 15 US gallons, that's 56.8 litres. Always check which gallon is being used.
What is a fluid ounce?
1 US fluid ounce = 29.574 mL. 1 UK fluid ounce = 28.413 mL. Note: fluid ounces measure volume, not weight — a fluid ounce of water weighs approximately 1 ounce, but other liquids differ.
How many tablespoons in a cup?
1 US cup = 16 tablespoons = 48 teaspoons. 1 US tablespoon = 14.787 mL. 1 UK tablespoon = 17.758 mL. Cooking recipes often use these smaller units — a conversion table is essential.
How do I convert cubic metres to litres?
1 cubic metre (m³) = 1,000 litres. 1 litre = 0.001 m³. Useful for calculating water tank capacities. A 2 m × 1.5 m × 1 m tank = 3 m³ = 3,000 litres.
Related Calculators
Convert Any Volume Unit
Convert between mL, litres, gallons, cups, pints, quarts, and fluid ounces instantly.
Open Volume Converter