1 cup = 236.5882 mL
Roughly one cup of flour. Multiply 1 cup by 236.5882365. The result is 236.5882 mL.
Fast answers, clean math
Cups to mL converter
Enter US cups and get milliliters instantly. The formula is shown so you can sanity-check the result.
Unit converter
Convert cups to milliliters
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Formula
How to convert US cup to milliliter (cup → mL)
One US cup equals exactly 236.5882365 milliliters. This is an exact definition, not an approximation, so the factor never changes.
Formula: milliliters = US cups × 236.5882365
To go the other way, multiply by 0.0042267528: US cups = milliliters × 0.0042267528.
For example, 1 cup × 236.5882365 = 236.5882 mL.
| Us cup (cup) | Milliliter (mL) |
|---|---|
| 0.25 cup | 59.1471 mL |
| 0.5 cup | 118.2941 mL |
| 0.75 cup | 177.4412 mL |
| 1 cup | 236.5882 mL |
| 1.5 cup | 354.8824 mL |
| 2 cup | 473.1765 mL |
| 3 cup | 709.7647 mL |
| 4 cup | 946.3529 mL |
| 6 cup | 1,419.5294 mL |
| 8 cup | 1,892.7059 mL |
Step by step
Worked US cup to milliliter examples
2 cup = 473.1765 mL
Roughly a pint. Multiply 2 cup by 236.5882365. The result is 473.1765 mL.
4 cup = 946.3529 mL
Roughly a quart. Multiply 4 cup by 236.5882365. The result is 946.3529 mL.
Background
What is a US cup?
A US cup is a cooking volume unit defined as exactly 236.5882365 milliliters, equal to 8 US fluid ounces or half a US pint.
The standardized US cup became common with printed recipes in the late nineteenth and early twentieth centuries, when measuring by volume replaced weighing ingredients in many home kitchens.
Everyday scale: A US cup is the size of a standard measuring cup used for flour, sugar, or liquids. Note that a metric cup used elsewhere is 250 mL.
System: US customary.
Background
What is a milliliter?
A milliliter is a metric unit of volume equal to one thousandth of a liter, the same as one cubic centimeter.
The milliliter shares its origin with the liter from the 1790s metric reform and is the standard small-volume unit in cooking, medicine, and science.
Everyday scale: A milliliter is about 20 drops of water. A teaspoon is roughly 5 mL and a standard shot glass holds around 44 mL.
System: metric (SI).
Where it helps
When you need to convert US cup to milliliter
Cooking and recipes
Recipes move between milliliters, liters, cups, and gallons depending on where they were written. Converting keeps liquid ratios correct so sauces, doughs, and drinks turn out as intended.
Fuel and automotive
Fuel economy and tank sizes are quoted in liters or gallons by region. Converting helps you compare prices, estimate range, and budget for a fill-up while traveling.
Home and garden
Paint, cleaning products, aquariums, and watering schedules list capacity in different volume units. Converting helps you buy the right amount and follow dilution instructions safely.
Accuracy
Precision and common mistakes
The US cup to milliliter factor is exact by definition, so any error comes from rounding too early. Keep full precision through your calculation and round only the final answer to the precision your task needs.
A common mistake is rounding the conversion factor to two or three digits before multiplying, which can shift the result noticeably on large values. Multiply first, then round. Always keep the unit label with the number so the meaning is never lost.
| Use case | Good rounding |
|---|---|
| Drinks and everyday cooking | Common fractions or 1 decimal place |
| Baking liquids | 2 decimal places |
| Fuel and large containers | 1 decimal place |
| Lab and medical dosing | Use the exact factor, then round at the end |
Plain answers
Us cup to milliliter FAQ
How do you convert US cup to milliliter?
Multiply the number of US cups by 236.5882365. That single factor converts any US cup value to milliliters.
How many milliliters are in one US cup?
One US cup equals 236.5882365 milliliters.
What is 2 cup in mL?
2 US cups equals about 473.1765 milliliters.
Is the US cup to milliliter conversion exact?
Yes. The factor is fixed by international definition, so US cup to milliliter is an exact conversion rather than an estimate.
How can I estimate US cup to milliliter in my head?
Multiply cups by about 240, so 2 cups is about 480 mL.