How Many Milliliters in a Cup? 236.6 ml Answer

One US cup equals 236.588 milliliters. That exact figure sits behind nearly every American recipe, nutrition label, and kitchen measuring cup you will ever pick up, and memorizing it saves you from the guesswork that ruins otherwise good cooking. For everyday kitchen use, rounding to 237 ml gets you close enough that no soup, sauce, or cake will ever notice the difference — but knowing the precise number matters when you are scaling recipes, tracking nutrition, or working across metric and imperial cookbooks.

If you have ever stood in a kitchen with a European recipe calling for 250 ml of milk and an American cup measure in your hand, you know the quiet panic this conversion causes. Do you fill the cup to the brim? A little under? The answer is neither: one US cup holds 236.588 ml, which means a metric-style recipe asking for 250 ml actually wants about one cup plus one tablespoon. This guide lays out every number you need in clear charts, explains why the US cup and the metric cup are not the same thing, and gives you mental-math shortcuts so you never have to look this up mid-recipe again.

1. Cup to Milliliter Conversion Chart

Start here. This chart covers the cup measurements you will reach for most often, with the exact milliliter value and a kitchen-friendly rounded figure for each. Use the exact column for baking and recipe development; use the rounded column when you are cooking by feel.

Cups	Exact milliliters	Rounded for cooking
1/4 cup	59.147 ml	59 ml
1/3 cup	78.863 ml	79 ml
1/2 cup	118.294 ml	118 ml
3/4 cup	177.441 ml	177 ml
1 cup	236.588 ml	237 ml
2 cups	473.176 ml	473 ml

A pattern worth noticing: every quarter cup adds 59.147 ml. Once you have that one figure in your head, you can build any common fraction of a cup without a chart — half a cup is two quarters, three-quarters is three, and a full cup is four.

2. Tablespoon, Teaspoon, and Fluid Ounce Equivalents

Cups rarely travel alone. American recipes constantly mix cups with tablespoons, teaspoons, and fluid ounces, so you need the milliliter values for all of them. The building blocks are simple: 1 tablespoon equals 14.787 ml and 1 fluid ounce equals 29.574 ml. A teaspoon is one-third of a tablespoon, which works out to 4.929 ml — conveniently rounded to 5 ml on most medicine droppers and metric measuring spoons.

Measurement	Exact milliliters	Rounded for cooking
1 teaspoon	4.929 ml	5 ml
1 tablespoon	14.787 ml	15 ml
2 tablespoons	29.574 ml	30 ml
1 fluid ounce	29.574 ml	30 ml
2 fluid ounces	59.147 ml	59 ml
4 fluid ounces	118.294 ml	118 ml
8 fluid ounces	236.588 ml	237 ml

Notice that 2 tablespoons and 1 fluid ounce land on the same value: 29.574 ml. That is no coincidence — the US customary system is built on neat ratios, with 2 tablespoons making a fluid ounce, 8 fluid ounces making a cup, and 16 tablespoons making a cup. Multiply 16 tablespoons by 14.787 ml and you get 236.592 ml, which matches the official 236.588 ml figure once you account for rounding in the tablespoon value. Everything connects.

3. Every Common Cup Fraction in Milliliters

Recipes love odd fractions — a third of a cup of oil here, two-thirds of a cup of sugar there. This chart gathers the full set of common cup fractions so you can convert any of them in one glance.

Cups	Exact milliliters	Rounded for cooking
1/8 cup	29.574 ml	30 ml
1/4 cup	59.147 ml	59 ml
1/3 cup	78.863 ml	79 ml
1/2 cup	118.294 ml	118 ml
2/3 cup	157.725 ml	158 ml
3/4 cup	177.441 ml	177 ml
1 cup	236.588 ml	237 ml
2 cups	473.176 ml	473 ml

Two fractions deserve special attention. One-third of a cup (78.863 ml) and two-thirds of a cup (157.725 ml) are the ones people fumble most, because they do not divide evenly into the quarter-cup marks on a standard measuring cup. If your measuring cup only shows quarters, build a third of a cup from tablespoons instead: 1/3 cup equals 5 tablespoons plus 1 teaspoon, which is 78.863 ml by the same math.

4. US Cup vs Metric Cup: The 13.4 ml Difference

Here is where most conversion mistakes happen. The metric cup is defined as exactly 250 ml — a clean, round number used in many international cookbooks and on metric measuring tools. The US customary cup is 236.588 ml. The gap between them is 13.412 ml, or roughly one tablespoon.

That single tablespoon is small enough to ignore in a hearty stew and large enough to matter in a delicate sponge cake or a bread dough where hydration percentages are tight. When a recipe simply says “1 cup” with no country attached, check the source: American-published recipes mean 236.588 ml, while recipes written for metric audiences — and many measuring jugs sold outside the US — treat a cup as 250 ml. If you are converting a recipe from one system to the other, decide which cup the author meant before you touch the math.

As a rule of thumb, if the rest of the recipe uses grams, milliliters, or Celsius, assume the metric cup of 250 ml. If it uses ounces, Fahrenheit, or cups alongside tablespoons, you are in US-cup territory at 236.588 ml.

5. Where Does 236.588 Come From?

The number looks oddly specific until you see the system behind it. The US cup is legally defined as exactly 236.5882365 milliliters, derived from the US customary gallon. A US gallon is defined as 231 cubic inches, and since a gallon contains 16 cups, one cup works out to 14.4375 cubic inches — which converts to 236.588 ml. The decimal trails off, so 236.588 ml is the standard rounded figure used in reference tables and nutrition work.

You can also build the cup from its smaller units, which is how most cooks actually think about it. The US cup is half a US pint, 8 fluid ounces, 16 tablespoons, or 48 teaspoons. Each of those paths leads back to the same number: 8 fluid ounces × 29.574 ml = 236.592 ml, and 16 tablespoons × 14.787 ml = 236.592 ml, both rounding to the official 236.588 ml. The US customary system shares its DNA with other imperial units like the inch, which is why its kitchen measures come in eighths, quarters, and sixteenths rather than clean tens.

6. Mental Math Shortcuts for Cup-to-ml Conversions

You will not always have a chart handy, so here are four shortcuts that get you within a whisker of the exact answer using nothing but your head.

Shortcut 1: The 240 rule. Round the cup to 240 ml instead of 236.588 ml. Your error is about 1.4 percent — invisible in cooking, and the math becomes trivial: half a cup is 120 ml, a quarter cup is 60 ml, three-quarters is 180 ml.

Shortcut 2: Build from quarters. Remember 59 ml per quarter cup. Need 3/4 cup? That is three quarters: 59 + 59 + 59 = 177 ml. Exact enough for any recipe.

Shortcut 3: Tablespoons at 15 ml. Since 1 tablespoon is 14.787 ml, rounding to 15 ml introduces an error of barely 1.4 percent. A recipe calling for 4 tablespoons of lemon juice needs about 60 ml — and indeed, 4 × 14.787 = 59.148 ml.

Shortcut 4: Fluid ounces at 30 ml. A fluid ounce is 29.574 ml, so calling it 30 ml costs you less than 1.5 percent. Eight fluid ounces gives 240 ml, just a touch above the true 236.588 ml.

The common thread: US kitchen measures are all within about 1.5 percent of a round metric number, because the system was designed around convenient fractions. Round freely while cooking; use the exact figures when you are baking at scale or doing nutrition math.

7. How to Scale Recipes Between Cups and Milliliters

Scaling is where the exact conversion earns its keep. To scale any recipe, convert the cups to milliliters first using 236.588 ml per cup, multiply or divide by your scaling factor, and then either keep the milliliter result or convert back.

Say a soup recipe makes 4 servings with 3 cups of stock, and you need 6 servings. Convert: 3 cups × 236.588 ml = 709.764 ml. Multiply by 1.5: 1,064.646 ml, or about 1.06 liters. Going the other direction, a European recipe calling for 500 ml of milk converts to 500 ÷ 236.588 = 2.113 cups — call it 2 cups plus 2 tablespoons and you are within a milliliter of perfect.

One caution: scaling is not always linear. Doubling the liquid in a sauce works fine, but doubling leavening agents, salt, or spices can unbalance a dish — scale those by about 1.5× when doubling and taste as you go. If you work with scaled measurements often, bookmark our broader measurement conversion guides alongside this chart so every unit you meet has a home.

8. Tips for Measuring Liquids Accurately

The best conversion in the world cannot fix a sloppy measurement. For liquids, use a clear measuring jug with milliliter markings, set it on a flat counter, and read the level at eye height — the bottom of the meniscus, that slight curve at the liquid’s surface, is the true reading. For sticky ingredients like honey or syrup, lightly oil the cup first so the full 236.588 ml actually makes it into the bowl.

Dry ingredients play by different rules. Flour settles and compacts, so a scooped cup can easily weigh more than a spooned-and-leveled one. Spoon flour into the cup and level it with a straight edge rather than packing it down. This is the same precision habit carpenters use when they learn how to read a measuring tape — consistent technique matters more than expensive tools.

Finally, keep your tools honest. Cheap measuring cup sets can be off by several milliliters per cup, and the error compounds across a recipe. If you bake often, check a new set once against a kitchen scale using water: 236.588 grams of water at room temperature should fill a true US cup almost exactly.

9. Converting Milliliters Back to Cups

Sooner or later you will need to run the conversion in reverse: a European recipe gives you 400 ml of cream and your measuring cups speak only in fractions. The formula is just as simple — divide by 236.588. So 400 ml becomes 400 ÷ 236.588 = 1.69 cups, which you can measure as 1 and 2/3 cups with confidence.

A few reverse conversions worth keeping in your back pocket: 100 ml is 0.42 cups (a generous 1/3 cup plus a splash), 200 ml is 0.85 cups (just shy of a full cup — measure 3/4 cup plus 1 tablespoon), 250 ml is 1.06 cups (one metric cup, or a US cup plus a tablespoon), 500 ml is 2.11 cups, and a full liter is 4.23 cups. Notice how close a liter is to the old quart measure of 4 cups — that is why so many international recipes round a liter to roughly 4 cups without anyone noticing.

If mental division is not your strong suit, flip the shortcuts from section 6 around: treat a cup as 240 ml, so 480 ml is about 2 cups and 120 ml is about half a cup. You will land within a tablespoon of the exact answer every time, which is plenty for everything except precision baking.

10. When Precision Matters Most — and When It Doesn’t

Not every recipe deserves the exact 236.588 ml treatment, and knowing when to relax is part of becoming a confident cook. Precision matters most in baking, where ratios of flour, liquid, fat, and leavening are chemistry: bread dough, sponge cakes, pastry, and custards all reward exact measurement. It also matters when you are scaling a recipe up for an event, because a small error multiplied across twenty servings becomes a real problem.

Precision matters least in soups, stews, stir-fries, smoothies, marinades, and salad dressings — anywhere you can taste and adjust as you go. If a soup calls for a cup of broth and you pour 250 ml instead of 236.588 ml, the difference is one tablespoon in a whole pot. Nobody will know, including you. Save your careful measuring for the recipes that cannot be fixed after the fact, and cook the forgiving ones by feel.

11. Frequently Asked Questions

How many milliliters are in half a cup?
Half a US cup is 118.294 ml, which you can round to 118 ml in the kitchen. That is also 4 fluid ounces or 8 tablespoons.

Is a metric cup the same as a US cup?
No. A metric cup is defined as exactly 250 ml, while a US cup is 236.588 ml. The difference is 13.412 ml — just under a tablespoon — so check which cup your recipe intends before converting.

How many tablespoons are in a cup?
There are 16 tablespoons in one US cup. The math checks out: 16 × 14.787 ml = 236.592 ml, which rounds to the official 236.588 ml.

How many ml are in a quarter cup?
A quarter cup is 59.147 ml, rounded to 59 ml for cooking. That equals 2 fluid ounces or 4 tablespoons.

12. Final Thoughts

The cup-to-milliliter conversion looks like trivia until the moment you need it — a recipe from another country, a doubled batch of bread dough, a nutrition label that refuses to speak in cups. Keep the anchor number, 236.588 ml, and its kitchen twin, 237 ml, in your head and you will handle all of it. Remember the supporting cast too: 14.787 ml per tablespoon, 29.574 ml per fluid ounce, and the metric cup’s clean 250 ml standing a tablespoon apart from its American cousin. With the charts above and the quarter-cup building block of 59 ml, you can convert any cup measurement accurately in seconds, scale recipes with confidence, and stop second-guessing the most common volume conversion in home cooking.