Cups to mL Converter

ml measuring jug icon

Convert between cups and milliliters / millilitres (mL) using this calculator tool. There are three different cup sizes included - US cup, imperial cup, metric cup. I've included an explanation of each cup, together with a table of measurements below the converter.


Whilst every effort has been made in building this cups and ml converter, we are not to be held liable for any special, incidental, indirect or consequential damages or monetary losses of any kind arising out of or in connection with the use of the converter tools and information derived from the web site. This cups and ml converter is here purely as a service to you, please use it at your own risk. Do not use calculations for anything where loss of life, money, property, etc could result from inaccurate conversions.

Please see the full disclaimer for more information.

How many ml in a cup?

To work out how many ml there are in a cup, you need to know which cup your recipe/instructions is referencing. The US cup measures 236.59 mL. In comparison, the old imperial UK cup (most commonly referenced in pre-1970s recipes) measures 284.13 mL. The metric cup, referenced in Commonwealth countries and modern UK recipes, measures 250 mL. Here's a chart of how they measure for 1 cup, 1/2 cup, 1/3 cup and 1/4 cup.

Conversion of measuring cups to ml

1 Cup 1/2 Cup 1/3 Cup 1/4 Cup
US Cup 236.59 mL 118.29 mL 78.86 mL 59.15 mL
UK Imperial Cup 284.13 mL 142.07 mL 94.71 mL 71.03 mL
Metric Cup 250 mL 125 mL 83.3 mL 62.5 mL

You can learn more about the different cups sizes in my article, tablespoon and cup sizes around the world. There's also a great article from the UK Telegraph about how cup measures can cause unnecessary havoc in your kitchen.

Measuring a liquid in ml

Other Cooking Units

Should you wish to convert between cups and other units, converters are also available for cups and grams, cups and ounces and quarts and cups.

If you have any suggestions for this converter, please contact me.