Cooking Measurements Converter

The cooking measurements converter translates between cups, tablespoons, teaspoons, millilitres, fluid ounces, grams, and other units used in recipes from different countries. It is designed for home cooks and professional chefs who work with recipes written in unfamiliar measurement systems.

How to Use the Cooking Measurements Converter

1. Enter the quantity you want to convert.
2. Select the unit you are converting from, such as cups or tablespoons.
3. Select the unit you are converting to, such as millilitres or fluid ounces.
4. For weight conversions involving ingredients, select the ingredient type if prompted, as density affects the result.
5. Read your converted measurement in the results field.

The Formula

Volume cooking conversions follow fixed ratios:

• 1 US cup = 236.6 ml
• 1 tablespoon = 3 teaspoons = 14.79 ml
• 1 fluid ounce = 29.57 ml
• 1 UK cup = 284.1 ml (older Imperial standard)

For weight-to-volume conversions (such as converting grams of flour to cups), the formula depends on the density of the ingredient. The general formula is:

Volume = Mass / Density

For example, water has a density of 1 g/ml, so 250 g of water equals 250 ml. Plain flour has a density of approximately 0.53 g/ml, so 250 g of flour is approximately 472 ml, or just under 2 US cups.

Real-World Example

A recipe calls for 2 cups of plain flour, but your scales measure in grams.

• 1 US cup of plain flour weighs approximately 125 g.
• 2 cups x 125 g = 250 g.
• You would weigh out 250 g of plain flour.

Note: sifted flour is less dense than unsifted flour, so 1 cup of sifted flour weighs closer to 110 g. For best baking results, always sift before measuring by weight or after measuring by volume, and match the recipe's method.

Common Cooking Measurement Equivalents

Keeping these ratios in mind saves time in the kitchen:

• 1 tablespoon = 3 teaspoons
• 4 tablespoons = 1/4 cup
• 16 tablespoons = 1 cup
• 1 cup = 8 fluid ounces
• 2 cups = 1 pint
• 4 cups = 1 quart

Australian tablespoons measure 20 ml, while US and UK tablespoons measure approximately 15 ml. This difference matters in baking, so check which standard your recipe uses.

Frequently Asked Questions

Why does converting cups to grams depend on the ingredient? Cups measure volume, while grams measure weight. Different ingredients have different densities, so the same volume of flour and sugar will weigh different amounts. A cup of sugar (200 g) weighs more than a cup of flour (125 g) because sugar is denser.

Is a UK cup the same as a US cup? No. A traditional UK cup is 284 ml (an Imperial half-pint), while a US cup is 236.6 ml (a US customary half-pint). Most modern UK recipes now use grams rather than cups, so this distinction mainly affects older British recipes.

How do I convert a recipe from Celsius to Fahrenheit for my oven? Multiply the Celsius temperature by 1.8, then add 32. For example, 180C equals 356F, commonly rounded to 350F. Fan-assisted ovens typically run about 20C hotter than conventional ovens, so reduce the temperature accordingly.

What is a pinch or a dash in measurable terms? A pinch is typically defined as 1/16 of a teaspoon (approximately 0.3 ml), while a dash is usually 1/8 of a teaspoon (approximately 0.6 ml). These are informal measures mainly used for seasoning and can vary by cook.

Also try these free tools:

• Unit Converter
• Weight Converter
• Temperature Converter

Volume units under three standards

The same word means a different volume in each system. The table gives the US customary figure, the metric figure used in Australia, New Zealand and Canada, and the older British imperial figure.

The gaps are large enough to spoil a bake. A metric cup holds 5.669 percent more than a US cup, and an imperial cup holds 20.095 percent more. An Australian tablespoon holds 35.256 percent more than a US tablespoon, which is why a recipe that reads correctly in Sydney over-rises in Seattle when the raising agent is measured by the spoon.

One recipe converted into grams and millilitres

A shortcake recipe written in cups and spoons converts line by line. The millilitre column uses the exact US customary definition and the gram column uses the published cup weight for each ingredient.

Two conversions in that table need a decision rather than a ratio. The baking powder is 1.5 teaspoons, which is 0.5 US tablespoons, 0.492892 metric tablespoons, and 0.369669 Australian tablespoons. A cook holding an Australian tablespoon measure and a US recipe has to do that division, and rounding it to half a spoon adds a third more raising agent than the recipe asks for. And the milk is 0.5 of a cup, which is 118.2941 mL, close enough to 118 g to weigh directly because milk is nearly as dense as water.

Why a cup of flour is not a cup of sugar

Volume and mass are separate quantities, and the bridge between them is bulk density. Dividing the published cup weight by the cup's volume gives the density each ingredient behaves as.

The page's own density for plain flour, 0.53 grams per millilitre, checks out both ways. Multiplying it by one cup gives 125.3918 grams, which is the published 125 grams rounded, and dividing 250 grams by it gives 471.698113 millilitres, which is 1.993751 US cups.

Sifting drops the density by more than a tenth, from 0.528344 to 0.464943. Sugar sits well above flour at 0.845351, so swapping the two by volume changes the mass in the bowl by roughly 60 percent. Weighing removes that variable, and it is the reason a recipe that lists grams for flour is more reliable than one that lists cups.

Deciding which standard a recipe uses

A recipe rarely names its system, and five clues settle it.

The pint is the widest gap in the table: 473.176473 mL in the US against 568.26125 mL in the imperial system, a difference of 95.0848 mL in a single unit. A recipe that asks for a pint of stock and gets a US pint loses about 95 mL, which matters in a sauce and not in a casserole.

Method and assumptions behind the densities

The US customary figures above are exact. A US gallon is defined as 231 cubic inches, so every subdivision of it is exact, and the awkward decimals come from converting an exact fraction into millilitres rather than from rounding. The metric figures are round by definition, and the imperial figures come from the imperial gallon of 4.54609 litres.

Where the conversion stops being exact, three things decide the answer.

• How the cup was filled. Spooning flour into a cup and levelling it packs less in than scooping with the cup itself, and the difference between the two methods runs from 10 to 20 percent.
• Whether the ingredient was sifted, settled or sieved after measuring. Flour compacts as it sits, so a cup drawn from a freshly opened bag weighs more than a cup drawn from a settled one.
• Temperature, for fats and syrups. Butter and honey both change density enough between fridge and room temperature to move a cup by a few percent.

Match the recipe's method rather than converting between methods. A recipe that says 125 grams and a recipe that says 1 cup describe the same mass only when the cup is filled the way the recipe's author filled it.

A note on the measurement standards

NIST Handbook 44, Appendix C, General Tables of Units of Measurement, is the reference behind the US column. It sets the US gallon at 231 cubic inches exactly and lists the gallon as 3785.411784 millilitres. Dividing by sixteen gives a cup of 236.588237 millilitres, which is the three-significant-figure 236.6 mL used in most recipes. The millilitre figure looks arbitrary and the cubic inch definition does not: a cup is one sixteenth of a gallon by definition, and the decimal expansion is what falls out of converting that exact fraction to metric.