What Is the Cups to Milliliters Converter?
This tool converts volume measured in US customary cups into milliliters (mL), the standard metric unit of volume used in most recipes worldwide. One US legal cup equals exactly 236.5882365 mL, derived from the US fluid ounce. Whether you are following an American recipe in a metric kitchen or scaling ingredients, this converter gives you a fast, precise answer.
How to Use It
Enter the number of cups you want to convert and the calculator instantly returns the equivalent volume in milliliters. You can enter whole numbers like 2 or fractional amounts such as 0.5 (half a cup) or 0.25 (a quarter cup).
The Formula Explained
The conversion uses a single multiplication:
$$\text{mL} = \text{cups} \times 236.5882365$$
The factor 236.5882365 comes from the US customary cup, which is defined as 8 US fluid ounces, with each fluid ounce equal to 29.5735295625 mL. Note that other "cup" standards exist — the metric cup is 250 mL and the UK imperial cup is about 284 mL — so this tool specifically uses the US customary cup.
Worked Example
How many milliliters are in 2 cups? Multiply:
$$2 \times 236.5882365 = 473.176473 \text{ mL}$$which rounds to about 473.18 mL. So two US cups equal roughly 473 mL.
FAQ
Is a cup always 236.59 mL? No. This figure is for the US customary cup. A metric cup is 250 mL and a UK cup is about 284 mL.
How many mL is half a cup? \(0.5 \times 236.5882365 \approx 118.29\) mL.
How many cups is 250 mL? Divide: \(250 \div 236.5882365 \approx 1.057\) US cups.
