Cups to Milliliters Converter
The Formula
Common Cups to Milliliters Values
| Cups | Milliliters | Fraction |
|---|---|---|
| 0.25 | 59.15 | 59⅛ |
| 0.5 | 118.29 | 118⅓ |
| 0.75 | 177.44 | 177½ |
| 1 | 236.59 | 236⅝ |
| 1.5 | 354.88 | 354⅞ |
| 2 | 473.18 | 473⅛ |
| 3 | 709.76 | 709¾ |
| 4 | 946.35 | 946⅓ |
| 5 | 1182.94 | 1182⅞ |
| 8 | 1892.70 | 1892⅔ |
| 10 | 2365.88 | 2365⅞ |
| 12 | 2839.06 | 2839⅛ |
A Worked Example
A French recipe calls for 1.5 cups of milk. Multiply 1.5 by 236.588 to get roughly 355ml — the figure to pour if you're using a liquid measuring jug marked in milliliters instead of a US cup. For a smaller amount, a quarter cup of cream works out to about 59ml, small enough that precision starts to matter more in a delicate sauce.
When This Conversion Matters
Recipes from outside the US almost always list liquid amounts in milliliters, so this conversion comes up constantly when following international cookbooks.
A US cup is 236.6ml. If a recipe uses a metric cup (250ml), swap in that value instead for an accurate result.
Baking recipes with delicate ratios, like custards or choux pastry, are especially sensitive to this gap — treating a metric cup as a US cup adds nearly 14ml of extra liquid per cup, which can thin a batter more than intended.
Beverage and cocktail recipes converted between countries also lean on this figure heavily, since a mismeasured mixer or spirit pour changes a drink's balance far more noticeably than in a large-volume dish.
Restaurant recipe development in the US increasingly documents test-kitchen results in both cups and milliliters from the start, rather than converting after the fact, specifically to reduce rounding drift when a recipe is later scaled for catering or franchise use.
Standards and Sources
The US customary cup is fixed at 236.588 milliliters under measurement standards maintained by the National Institute of Standards and Technology (NIST), the figure this converter and every cup-based calculation on this site is built around.
The metric cup, used in Australia, New Zealand, and some other countries, is defined as exactly 250 milliliters — about 5.7% larger than the US cup, a gap significant enough to matter in precise baking.
USDA FoodData Central lists ml-equivalent volumes alongside gram weights for many foods, using the 236.588ml US cup as its baseline for any US-published nutrition or recipe data.
Digital kitchen scales that double as liquid volume converters typically use the 236.588ml figure internally when displaying a 'cups' reading for water-based liquids, since weight and volume are nearly interchangeable for water specifically.
Where This Unit Comes From
The 'cup' as a kitchen measure has US roots dating to the late 1800s, when Fannie Farmer's cookbooks helped standardize level measurements over the vaguer 'a cup of' instructions common in earlier American recipe writing. The milliliter, by contrast, comes from the metric system formalized in France in the 1790s and later adopted internationally as the SI standard for small liquid volumes.
Where This Shows Up
This conversion shows up constantly when following recipes from European, Australian, or Asian food blogs, nearly all of which list liquid ingredients in milliliters rather than cups. Sauces, custards, and pastry creams — recipes where a small volume error visibly changes texture — are where the difference between a careless estimate and an accurate conversion matters most.
Home baristas dialing in a pour-over or espresso recipe frequently work in milliliters for water volume, since brewing guides published internationally default to metric measurements even when the rest of a US kitchen doesn't.
Meal-prep containers and reusable food storage sold internationally are often marked in milliliters, and home cooks portioning out prepped ingredients frequently need to relate that container size back to a familiar cup measurement.
Common Mistakes
- Assuming every 'cup' is the US 236.6ml standard — Australian and New Zealand recipes use a 250ml metric cup instead, a nearly 6% difference that adds up across a full recipe.
- Rounding too early in multi-step recipes, where small ml errors compound across several converted ingredients.
- Using a dry measuring cup to measure liquid volume, which makes it harder to read the fill line accurately at eye level.
- Trusting a phone app's default unit setting without checking it, since some apps silently default to metric cups for users with a non-US region setting.
US Cup vs Metric Cup in Milliliters
| US Cup | Metric Cup | |
|---|---|---|
| Volume | 236.588 ml | 250 ml |
| Used in | United States | Australia, NZ, some intl. recipes |
| Difference | Baseline | ~5.7% larger |
| Standards body | NIST | Varies by country |
Related Converters
Frequently Asked Questions
How many ml are in a cup?+
A US cup is 236.6ml. A metric cup, used in some countries, is 250ml.
Is a UK cup the same as a US cup?+
No official UK cup exists in modern recipes, but older imperial references sometimes use 284ml.
Why do some recipes use ml instead of cups?+
Milliliters are more precise and don't depend on how tightly an ingredient is packed into a cup.
Does the cup-to-ml conversion change for dry ingredients?+
No — the volume conversion stays the same for any substance. Only the weight in grams changes based on the ingredient's density.
Can I use a kitchen scale instead of a measuring cup for ml conversions?+
Yes, for liquids close to water's density, weighing in grams gives nearly the same result as measuring in ml, since 1ml of water weighs almost exactly 1 gram.
Do baking recipes need exact ml precision?+
For most home baking, rounding to the nearest 5ml is fine. Precision matters more in candy-making and pastry work where small liquid changes affect texture.
Does altitude affect a cups-to-ml conversion?+
No. Volume conversion factors are fixed regardless of altitude or air pressure — only boiling points and some cooking times are affected by elevation.