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Cooking Measurement Converter

Convert recipe measurements between US customary cups, spoons and fluid ounces, metric cups and spoons, UK imperial measures, milliliters and liters, and weights in grams, kilograms, ounces and pounds. Volume-to-volume conversions are exact; to turn cups into grams, choose an ingredient and the tool applies a documented approximate density and says so.

Unit Converters Runs in your browser

Convert Cooking Measurements

US, metric, Australian and UK cups and spoons are all different sizes. Volume-to-weight results use approximate ingredient densities (listed below the result) and are estimates, not exact.

Decimals and scientific notation such as 1.5e3 are accepted.
Automatic shows exact results in full and rounds long ones to 12 significant digits. A value too small for the chosen decimal places is shown with 3 significant digits instead of 0.
Densities are approximate averages; the table below the result lists every value used.

How to Use the Cooking Measurement

  1. Type the amount in Value to convert and pick the starting measure in From unit and the target in To unit.
  2. For volume to volume (for example cups to milliliters) no ingredient is needed and the result is exact.
  3. To convert between volume and weight (cups to grams, grams to cups) choose the Ingredient. The page shows the density it applied.
  4. Check the table of all measures and the density table below it. Use Swap units to reverse the direction or Copy result to paste it.

About This Tool

Home cooks following an American recipe with a metric kitchen scale, bakers who want repeatable weights, people scaling recipes between the US, UK and Australia, and students in food science or catering.

Input: A number and a unit  ·  Output: The same cooking measurement in every unit.

Features and Limitations

Features

  • Exact volume factors: 1 US cup = 236.5882365 mL, 1 US tbsp = 14.78676478125 mL, 1 US tsp = 4.92892159375 mL, 1 UK pint = 568.26125 mL.
  • Separate US, metric (250 mL cup, 15 mL tbsp), Australian (20 mL tbsp) and UK measures, so you can see which one a recipe means.
  • Twelve ingredients with a visible density table: water, milk, flour (sifted and unsifted), sugars, butter, honey, oil, rice and salt.
  • Results involving ingredients are marked with “≈” and explained.

Limitations

  • Volume-to-weight conversion is approximate. Flour can vary by 20 % depending on whether it is spooned, scooped or sifted, and brands of salt differ widely in density. Weigh baking ingredients when precision matters.
  • Ingredients not in the list (for example cocoa, oats or grated cheese) cannot be converted between volume and weight.
  • Results are computed in your browser; nothing you enter is sent to a server.

Example

1 US cup = 236.5882 mL = 16 tbsp = 48 tsp = 8 fl oz. A 250 mL metric cup is 5.7 % bigger. 1 US cup of all-purpose flour ≈ 125 g, so 250 g flour ≈ 2 cups. 200 g granulated sugar ≈ 1 cup. 1 US cup of butter ≈ 227 g. 1 Australian tablespoon = 20 mL = 1.3526 US tbsp.

Frequently Asked Questions

How many milliliters are in a cup?

A US customary cup is 236.5882365 mL, the US legal (nutrition label) cup is 240 mL, a metric cup is 250 mL and a traditional UK imperial cup (half an imperial pint) is 284.13 mL. This converter lists them separately; check which one your recipe uses.

How many grams are in a cup of flour?

About 125 g for a US cup of all-purpose flour that is spooned in and leveled, or about 115 g if sifted, and 140 g or more if you scoop straight from the bag. This tool uses 0.529 g/mL (spooned) and 0.485 g/mL (sifted); weighing is more accurate.

Why do the results say approximate?

Weight per cup depends on the ingredient's density, which depends on moisture, grind, brand and packing. The densities used are listed in the table below the result, so you can see exactly what the tool assumed.

What is the difference between a tablespoon in the US, UK and Australia?

A US tablespoon is 14.787 mL, the modern UK and metric tablespoon is 15 mL, and an Australian tablespoon is 20 mL. Teaspoons are 4.93 mL (US) and 5 mL (metric).

Is a fluid ounce the same as an ounce?

No. A fluid ounce is a unit of volume and an ounce is a unit of weight (28.35 g). For water they are close (1 US fl oz of water weighs about 29.6 g), but for flour or honey they are not.

Related Tools

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