Volume Converter
American recipes and fuel pumps use teaspoons, tablespoons, fluid ounces, cups, pints, quarts and gallons. These are US customary units and are not the same size as the British imperial units with the same names. Every value below is US customary unless stated otherwise.
Volume Conversions
- Cups to Milliliters 1 cup = 236.588 milliliters
- Milliliters to Cups 1 milliliter = 0.00422675 cups
- Fluid Ounces to Milliliters 1 fluid ounce = 29.5735 milliliters
- Milliliters to Fluid Ounces 1 milliliter = 0.033814 fluid ounces
- Gallons to Liters 1 gallon = 3.78541 liters
- Liters to Gallons 1 liter = 0.264172 gallons
- Quarts to Liters 1 quart = 0.946352946 liters
- Liters to Quarts 1 liter = 1.05669 quarts
- Tablespoons to Milliliters 1 tablespoon = 14.7868 milliliters
- Milliliters to Tablespoons 1 milliliter = 0.067628 tablespoons
- Teaspoons to Milliliters 1 teaspoon = 4.92892 milliliters
- Milliliters to Teaspoons 1 milliliter = 0.202884 teaspoons
Common Volume Questions
- How Many Ounces in a Cup? There are exactly 8 fluid ounces in one US cup.
- How Many Tablespoons in a Cup? There are exactly 16 tablespoons in one US cup.
- How Many Teaspoons in a Tablespoon? There are exactly 3 teaspoons in one US tablespoon.
- How Many Cups in a Quart? There are exactly 4 cups in one US liquid quart.
- How Many Cups in a Gallon? There are exactly 16 cups in one US gallon.
- How Many Quarts in a Gallon? There are exactly 4 quarts in one US gallon.
- How Many Ounces in a Gallon? There are exactly 128 fluid ounces in one US gallon.
- How Many Milliliters in a Cup? There are 236.5882365 milliliters in one US customary cup, normally rounded to 237 mL.
Volume Units
Milliliter (mL)
A milliliter is one thousandth of a liter and is exactly the same volume as one cubic centimeter. It is the standard unit in metric recipes and on medicine labels.
Liter (L)
A liter is 1,000 milliliters, defined as exactly one cubic decimeter. Bottled drinks, fuel and engine sizes are measured in liters nearly everywhere outside the United States.
Teaspoon (tsp)
A US teaspoon is one third of a tablespoon, or about 4.93 milliliters. Metric recipes often round the teaspoon to a flat 5 milliliters, which is close enough for cooking but not for medicine.
Tablespoon (tbsp)
A US tablespoon is 3 teaspoons, or about 14.79 milliliters. Australian recipes are the trap here: an Australian tablespoon holds 4 teaspoons, or 20 milliliters.
Fluid ounce (fl oz)
A US fluid ounce is exactly 29.5735295625 milliliters and measures volume, not weight. The UK imperial fluid ounce is slightly smaller at 28.41 milliliters.
Cup (cup)
A US customary cup is 8 fluid ounces, or exactly 236.5882365 milliliters. Nutrition labels use a separate "legal cup" of exactly 240 milliliters, and a metric cup is 250 milliliters.
Pint (pt)
A US liquid pint is 2 cups, or about 473 milliliters. A British imperial pint is noticeably larger at 568 milliliters, which is why a pint of beer differs on each side of the Atlantic.
Quart (qt)
A US liquid quart is 2 pints, 4 cups or about 946 milliliters, which makes it just under a liter. Milk, stock and motor oil are commonly sold by the quart in the United States.
Gallon (gal)
A US liquid gallon is exactly 3.785411784 liters, made up of 4 quarts or 128 fluid ounces. The UK imperial gallon is a different unit of 4.546 liters, about 20 percent larger.
Every volume value on this site is derived from the liter using exact definitions from NIST Handbook 44, Appendix C. See how we calculate.