Milliliters to Cups Conversion Guide

Recipes in the US use cups. Recipes from most other countries use milliliters. When you are working between the two, the conversion is not especially complicated — but it is easy to get wrong if you are not sure which cup size applies.

This guide covers the exact conversion, a practical reference table, and what to do when you do not have the right measuring tools.

For quick calculations, the Volume Converter handles milliliters, cups, fluid ounces, liters, and gallons in one place.

The Basic Conversion: mL to Cups

One US cup is exactly 236.588 milliliters.

That rounds to 237 mL for most practical purposes.

Going the other direction: 1 mL = 0.00422675 US cups, which is not a particularly useful number on its own. In practice, you are usually converting a specific volume:

The ¼, ⅓, ½, ⅔, and ¾ cup values are the ones that come up most often in recipes, so those are worth keeping nearby.

Which "Cup" Are We Talking About?

This matters more than most people realize.

A US customary cup (the standard in American recipes) is 236.588 mL. But there are other cup definitions:

• US legal cup (used on US nutrition labels): 240 mL exactly
• Imperial cup (old UK standard, now largely obsolete): 284 mL
• Metric cup (Australia, Canada, some others): 250 mL

The difference between a US cup and a metric cup is about 13 mL — small for a glass of water, but meaningful in baking, where proportions matter.

If you are following a recipe from Australia or Canada and converting their "cups" to milliliters, use 250 mL. For US recipes, use 237 mL (or 240 mL if you want to match nutrition label standards). British recipes rarely use cups at all anymore, so if you see cup measurements in an older UK recipe, verify the source.

Converting Cups to Milliliters

If the recipe gives cups and you need milliliters:

mL = cups × 236.588

Rounded:

• ¼ cup = 59 mL (often rounded to 60)
• ⅓ cup = 79 mL (often rounded to 80)
• ½ cup = 118 mL (often rounded to 120)
• ¾ cup = 177 mL (often rounded to 180)
• 1 cup = 237 mL
• 1½ cups = 355 mL
• 2 cups = 473 mL

In baking, these rounding differences are generally fine. Measuring 120 mL instead of exactly 118.3 mL will not ruin a cake. But if you are measuring something like a chemical solution or a medical formula, use the exact number.

When You Do Not Have a Cup Measure

If you have a kitchen scale or a graduated measuring jug but not a set of US measuring cups, here are the most useful conversions:

For water and most thin liquids, 1 mL weighs 1 gram. So 237 mL of water weighs 237 grams. You can weigh the liquid on a scale if you do not have a measuring jug.

For thicker liquids like milk, the weight is close to 1 g/mL. For cooking oil it is around 0.92 g/mL, so 1 cup of oil weighs about 218 grams rather than 237 grams.

A standard tablespoon is 15 mL, and a teaspoon is 5 mL. So:

• ¼ cup = 4 tablespoons
• ⅓ cup = 5 tablespoons + 1 teaspoon
• ½ cup = 8 tablespoons

If you have tablespoon measures but no cup measure, you can build up any cup fraction from tablespoons. It is tedious for large volumes but works fine for small amounts.

Milliliters to Cups in Baking vs Cooking

Baking is more sensitive to measurement errors than general cooking.

When making bread, pastry, or cakes, the ratio of flour to liquid is often precise enough that being off by 20–30 mL can affect texture. If a recipe calls for 180 mL of milk and you add 200 mL, the dough may come out wetter than intended.

General cooking — soups, sauces, stews — is more forgiving. A cup of stock, ¾ cup of cream: being slightly off usually does not change the outcome.

For baking, weigh ingredients where you can. For liquid ingredients where a scale is not practical, measure in milliliters with a graduated jug rather than trying to estimate cup fractions visually.

Common Recipe Amounts in Milliliters

These come up regularly in US recipes:

• 1 cup of water = 237 mL
• 1 cup of milk = 237 mL (roughly 244 g due to higher density)
• 1 cup of flour = 237 mL by volume, but around 120–130 g by weight — this is why weight is more reliable for flour
• 1 cup of sugar = 237 mL by volume, around 200 g by weight
• 1 cup of butter = 237 mL, or 2 sticks, or 227 g

The flour example is the important one. A loosely scooped cup of flour and a tightly packed one can differ by 30–40 grams. If a recipe only gives cup measurements, spoon the flour into the measuring cup and level it off rather than scooping from the bag — that produces a more consistent result.

A Note on Fluid Ounces vs Cups

US recipes sometimes mix fluid ounces and cups. One US cup is 8 fluid ounces, so:

• 4 fl oz = ½ cup = 118 mL
• 8 fl oz = 1 cup = 237 mL
• 16 fl oz = 2 cups = 473 mL
• 32 fl oz = 4 cups = 946 mL

The Volume Converter includes fluid ounces alongside cups and milliliters, so you can convert between all three without doing the arithmetic in steps.

Quick Formula Recap

• mL → US cups: divide by 236.6 (or 237 for a round number)
• US cups → mL: multiply by 236.6
• mL → metric cups (AU/CA): divide by 250
• Metric cups → mL: multiply by 250