US cups to Milliliters Converter
Convert US cups (cup) to Milliliters (mL) instantly, or use the conversion table below to look up common values.
US cups to Milliliters conversion table
| US cups (cup) | Milliliters (mL) |
|---|---|
| 1 | 236.588237 |
| 2 | 473.176473 |
| 3 | 709.764709 |
| 4 | 946.352946 |
| 5 | 1,182.941183 |
| 10 | 2,365.882365 |
| 25 | 5,914.705913 |
| 50 | 11,829.411825 |
| 100 | 23,658.82365 |
How to convert US cups to Milliliters
1 cup equals 236.588237 mL. Use the converter above for any value, or read the table for common conversions.
mL = cup × 236.5882365 · cup = mL × 0.004226752837730375Multiply a us cups figure by 236.588237 to get milliliters, or divide it by 0.004227 to go the other way.
Worked examples
- 1 cup= 236.588237 mL
- 2 cup= 473.176473 mL
- 5 cup= 1,182.941183 mL
- 10 cup= 2,365.882365 mL
- 20 cup= 4,731.76473 mL
What these units are
US cups (cup). A US cup is 236.5882365 milliliters, or 8 US fluid ounces. It is the standard measure in American recipes; metric and Australian cups are 250 milliliters, so a recipe's cup depends on where it was written.
Milliliters (mL). A milliliter is one thousandth of a liter, and exactly the same volume as one cubic centimeter. It is used for drinks, medicine doses and recipe quantities.
US and imperial units are kept separate because they are genuinely different sizes. Confirm which system a source means before trusting a converted figure.
Converting US cups to Milliliters in practice
Working in us cups
A US cup is exactly 236.5882365 milliliters, one sixteenth of a US gallon and eight US fluid ounces. It is a recipe measure rather than a general liquid unit.
It appears in American and adapted recipe books, baking charts, measuring cup sets and some packaged food directions. Outside cooking it is rarely a legal or trade unit.
The US cup is exactly eight US fluid ounces, so cup to milliliter conversions are exact at 236.5882365. Results are rounded for display, which can shift the last digit on a return conversion.
The trap is the US legal cup of 240 milliliters used on nutrition labels, and the separate metric cup of 250 milliliters; neither matches this unit. Recipe cups are also level, not heaped.
The US cup belongs with US fluid ounces and pints, while milliliters and liters belong to the metric recipe. A metric jug marked in milliliters will not match a cup measure exactly, so a recipe converted cup by cup accumulates a small error each step.
Reading the result in milliliters
A milliliter is one thousandth of a liter, exactly one cubic centimeter, or 0.000001 cubic meters. It is the small metric unit for liquid and dose volumes.
Medicine doses, laboratory samples, cosmetics, flavorings and small bottles of liquid are measured in milliliters. Syringes, measuring spoons and dosing cups are graduated in milliliters. Beverage cans and bottles often carry the volume on the label.
Milliliters to liters is a division by 1,000 exactly, and milliliters to cubic centimeters is a one-to-one identity. The fluid ounce is exactly 1/128 of a US gallon, and printed results are rounded, so a return conversion can differ in the final digit.
The mistake is treating a milliliter as a drop or a spoonful; a metric teaspoon holds five milliliters and a tablespoon fifteen. This site uses the US fluid ounce, not the imperial one, when converting small volumes.
Milliliters suit small quantities, liters suit bottles and fuel, and US cups and fluid ounces serve recipes written on the other scale. A 240-milliliter measure is the US legal cup, while a metric cup of 250 milliliters is a different unit.
Checking a us cups to milliliters conversion
The metric volume units are a clean decimal chain around the liter, so liters to milliliters is a shift of three places and cubic meters to liters is a shift of three the other way. Those pairs a reader can do without a converter.
Every pair that names a US or imperial liquid unit has to go through the definition first, because three of these units differ from a metric unit by amounts too large to round away: a liter is not a quart, a gallon is 3.785411784 liters in the US system and 4.54609 in the imperial one, and a US fluid ounce is not an imperial fluid ounce.
When checking a volume conversion, convert into liters and out again, or measure the container. The mistake that survives every other check is reading a US measure as the imperial unit of the same name, which changes a recipe, a fuel figure or a tank size by about a fifth.
Tanzania reference points
Real quantities, converted into the units on this page.
The 20-litre bucket or canister used to carry water in Tanzania
20 L = 84.535057 cup = 20,000 mL
WaterAid puts the minimum daily water need per person at 20 litres, so one container is roughly one person's daily requirement.
Source: IPS News — water access in Tanzania, citing WaterAid · verified 2026-09-14
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