How to use
- Enter a value, then pick the unit you are converting from and the unit you want to.
- The result appears instantly, and the table below shows the same volume in every unit.
- When you pick a unit whose size depends on the country — cups, or the Korean doe and mal — a short note explains which definition is used.
Conversion factors
The US gallon is defined as 231 cubic inches and the UK (imperial) gallon as 4.54609 liters, so the values below are exact. Units with the same name differ between the US and the UK.
| Unit | Equals | Notes |
|---|---|---|
| 1 US gallon | 3.785411784 L | 4 qt = 8 pt = 16 cups = 128 fl oz |
| 1 US cup | 236.5882365 mL | 16 tablespoons |
| 1 US fluid ounce | 29.5735295625 mL | 2 tablespoons |
| 1 US tablespoon | ≈ 14.787 mL | 3 teaspoons |
| 1 US teaspoon | ≈ 4.929 mL | |
| 1 UK gallon | 4.54609 L | 8 pints = 160 fl oz |
| 1 UK pint | 568.26125 mL | 20 UK fluid ounces |
| 1 UK fluid ounce | 28.4130625 mL | about 4% smaller than the US one |
| Metric tbsp / tsp | 15 mL / 5 mL | |
| 1 cubic centimeter (cc) | 1 mL | |
| 1 cubic meter | 1,000 L |
The Korean traditional units are included too: 1 doe = 2401/1331 L (about 1.804 L), 1 mal = 10 doe, 1 hop = 1/10 doe.
Examples
- 2 US cups of flour by volume is about 473 mL.
- A gallon of milk in the US is 3.79 L; a UK gallon would be 4.55 L.
- A UK pint of beer (568 mL) is about 20% larger than a US pint (473 mL).
- 3 tablespoons (US) is exactly 1.5 US fluid ounces, about 44.4 mL.
Things to keep in mind
- US and UK gallons differ by about 20%, which is why US and UK fuel economy figures in mpg are not directly comparable.
- Cup sizes vary: a US customary cup is about 236.6 mL, US nutrition labels round it to 240 mL, metric cups (Australia, Canada, New Zealand) are 250 mL and Korean recipes use 200 mL.
- For shipping volume from box dimensions, use the CBM calculator. For other kinds of units, try the unit converter.
FAQ
How many milliliters are in a cup?
A US cup is 236.59 mL. If a recipe comes from Australia or Canada, it likely means a 250 mL metric cup.
How many tablespoons are in a cup?
16 US tablespoons, or 48 teaspoons.
How many liters are in a gallon?
3.785 L in a US gallon and 4.546 L in a UK (imperial) gallon.