Cups to Milliliters
Convert Cups to Milliliters instantly.
How to Convert Cups to Milliliters
To convert US cups to milliliters, multiply by 236.588. One US cup equals 236.588 milliliters — commonly rounded to 237 ml. This is one of the most frequently needed cooking conversions, used when following recipes from countries that use metric measurements, when a liquid measuring cup shows both scales, and when scaling recipes that mix US and metric measurements. Accurate cup-to-ml conversion is especially important in baking, where liquid ratios directly affect texture and rise.
Cups to Milliliters Reference Chart
Common conversions: ¼ cup = 59.15 ml · ⅓ cup = 78.86 ml · ½ cup = 118.29 ml · ¾ cup = 177.44 ml · 1 cup = 236.59 ml · 1½ cups = 354.88 ml · 2 cups = 473.18 ml · 4 cups = 946.35 ml.
Frequently Asked Questions
How many ml are in a cup?
One US cup equals 236.588 milliliters, commonly rounded to 237 ml or 240 ml on nutrition labels. The cup is defined as exactly 8 US fluid ounces. A metric cup (used in Australia, Canada, and New Zealand) is 250 ml — slightly more than a US cup.
How many cups is 250 ml?
250 ml ÷ 236.588 = 1.057 US cups — just barely over 1 cup (by about 1 tablespoon). If a recipe calls for 250 ml and you are using US measuring cups, a scant cup plus 1 tablespoon is the most accurate substitute.
How many ml is ¾ cup?
¾ cup × 236.588 = 177.44 ml, commonly rounded to 177 ml. Fractional cups are common in baking recipes, and knowing their ml equivalents helps when measuring with a metric scale or graduated metric measuring cup.
Why is 1 cup sometimes listed as 240 ml instead of 237 ml?
Nutrition labels in the US round 236.588 ml up to 240 ml for simplicity. The FDA defines a cup as 240 ml for labeling purposes, while the actual US customary cup is 236.588 ml. This small 1.4% difference rarely matters in everyday cooking but can be significant in precise scientific or commercial food production contexts.