Cooking Converter

What Is a Cooking Converter?

A cooking converter translates recipe measurements between the volume units used in the kitchen. Recipes from different countries use different measurement systems, and the mismatch is a frequent source of kitchen failure. American recipes rely on cups, tablespoons, and teaspoons. European and international recipes typically use milliliters and liters. British recipes sometimes mix both, calling for 4 fl oz of milk in one line and 2 tablespoons of flour in the next. Converting between these units accurately is the difference between a sauce that comes together and one that breaks, especially in baking where precision matters more than in general cooking.

The standard US cooking conversions are based on the US customary cup, which is 236.588 milliliters. One cup equals 16 tablespoons, and one tablespoon equals 3 teaspoons, so one cup equals 48 teaspoons. One US fluid ounce is 29.5735 milliliters, and there are 8 fluid ounces in a cup. For converting other unit types like length or weight, try our Unit Converter.

US vs Metric vs Imperial Cups

Not all cups are the same. The US customary cup is 236.588 ml. The metric cup, used in Australia, New Zealand, and Canada, is exactly 250 ml. The imperial cup, used in older UK recipes, is 284.131 ml. A recipe that says "1 cup of flour" can mean three different amounts depending on where it was written. The difference between a US cup and a metric cup is 13.4 ml, which is about 2.5 teaspoons of flour. In a cake recipe that calls for 3 cups, that adds up to a 40 ml discrepancy, enough to change the texture. This converter uses the US customary cup standard, which is the most common in online recipes.

The tablespoon has similar regional variation. The US tablespoon is 14.7868 ml. The Australian tablespoon is 20 ml (4 teaspoons, not 3). The UK tablespoon is 15 ml. If you are following an Australian recipe that calls for 2 tablespoons of soy sauce, you need 40 ml, not the 29.57 ml that a US tablespoon conversion would give. Always check the country of origin for a recipe before assuming the cup and tablespoon sizes.

What This Calculator Does

This cooking converter supports six common volume units: cups, tablespoons, teaspoons, milliliters, liters, and fluid ounces. Enter a value, pick the source and target units, and the result appears instantly. A swap button reverses the conversion, and a full table shows your input in every supported unit at once.

• Inputs: A numeric value, source unit, and target unit
• Outputs: Converted result, conversion details, and a table of all units

How the Conversion Works

The calculator first converts the input to milliliters, the base unit, then divides by the target unit's factor in milliliters. For example, converting 2 cups to tablespoons: 2 cups times 236.588 equals 473.176 milliliters. Dividing by 14.7868 gives 32 tablespoons. For mass-based conversions, see our Mass Calculator.

The converter handles volume only. It does not convert between volume and weight, because that depends on the density of the ingredient. One cup of flour (about 120 grams) and one cup of sugar (about 200 grams) have the same volume but different weights. For nutrition calculations based on ingredient weights, see our Recipe Nutrition Calculator.

Common Cooking Conversions

How to Use the Calculator

1. Enter the measurement value you want to convert.
2. Select the unit you are converting from.
3. Select the unit you are converting to, or click swap to reverse the direction.
4. Read the result and the full conversion table below it.

Example Calculations

Example 1: French Recipe to US Cups

A home cook in Texas finds a French recipe that calls for 200 ml of milk. She needs the amount in cups for her US measuring set.

• Convert: 200 / 236.588 = 0.845 cups
• Result: about 7/8 of a cup, or 13.5 tablespoons
• Practical: measure 13 tablespoons plus 1.5 teaspoons

Example 2: Scaling a Marinade

A recipe for 4 servings calls for 3 tablespoons of olive oil. The cook is making 6 servings and wants to scale the oil to milliliters for precision.

• Original: 3 tbsp times 14.7868 = 44.36 ml for 4 servings
• Scaled: 44.36 times (6 / 4) = 66.54 ml for 6 servings
• In tablespoons: 66.54 / 14.7868 = 4.5 tablespoons

Real-World Scenarios

Adapting a British Baking Book

Claire, a home baker in Ohio, received a Mary Berry baking book from her British mother-in-law. The scone recipe calls for 10 fl oz of milk and 4 tablespoons of caster sugar. Her American measuring cups and spoons use the US customary standard, not imperial. She converts 10 imperial fl oz to milliliters first: 10 times 28.4131 = 284.13 ml. Then to US cups: 284.13 / 236.588 = 1.20 cups. The 4 tablespoons are simpler, since a UK tablespoon is 15 ml and a US tablespoon is 14.7868 ml, so 4 UK tablespoons (60 ml) equals 4.06 US tablespoons, close enough to use 4 US tablespoons. She notes that the imperial fluid ounce is about 4% larger than the US fluid ounce, which is why British pints (20 imperial fl oz) are bigger than US pints (16 US fl oz). For converting oven temperatures between Celsius and Fahrenheit, she uses our Temperature Converter.

Scaling a Restaurant Recipe to Home

Marcus, a line cook in Portland, wants to adapt a restaurant vinaigrette recipe for home use. The restaurant version calls for 750 ml of olive oil, 250 ml of red wine vinegar, and 45 ml of Dijon mustard. He wants to make one-third of the batch. Using the converter, 750 ml divided by 3 is 250 ml, which is 1.06 cups (about 1 cup plus 1 tablespoon). The vinegar at 250 ml divided by 3 is 83.3 ml, or 5.64 tablespoons. The mustard at 45 ml divided by 3 is 15 ml, which is exactly 1 tablespoon. He writes down the home version: 1 cup plus 1 tbsp oil, 5.5 tbsp vinegar, 1 tbsp mustard. The converter lets him move between the metric measurements the restaurant uses and the cup-and-spoon measurements his home kitchen is equipped for. For calculating the calorie content of the finished vinaigrette, he references our Recipe Nutrition Calculator.

Australian Recipe with a 20 ml Tablespoon

Priya, a food blogger in New York, is testing an Australian anzac biscuit recipe that calls for 2 tablespoons of golden syrup. She knows the Australian tablespoon is 20 ml, not the US 14.7868 ml. Using the converter, she first converts 2 Australian tablespoons to milliliters: 2 times 20 = 40 ml. Then she converts 40 ml to US tablespoons: 40 / 14.7868 = 2.7 US tablespoons. If she had used 2 US tablespoons, she would have used 29.57 ml instead of 40 ml, a 26% shortfall that would make the biscuits dry and crumbly. She adds a note to her blog post about the Australian tablespoon difference, since most of her readers use US measurements. For the butter in the same recipe, which is listed as 125 grams, she needs a weight conversion, which she does with our Weight Converter.

Common Mistakes to Avoid

• Confusing US and metric cups: A US cup is 236.588 ml. A metric cup is 250 ml. The 13.4 ml difference is about 2.5 teaspoons, which matters in baking. If a recipe comes from Australia, New Zealand, or Canada, it likely uses the 250 ml metric cup. This converter uses the US cup. For metric cup recipes, convert through milliliters instead.
• Using the wrong tablespoon size: The US tablespoon is 14.7868 ml (3 teaspoons). The Australian tablespoon is 20 ml (4 teaspoons). The UK tablespoon is 15 ml. An Australian recipe calling for 2 tablespoons needs 40 ml, not the 29.57 ml that 2 US tablespoons would give. This is a 35% difference that ruins recipes.
• Confusing fluid ounces and weight ounces: A fluid ounce is a volume unit (29.5735 ml). An ounce is a weight unit (28.35 grams). They are not the same. One fluid ounce of water weighs about 1.04 ounces, but one fluid ounce of honey weighs 1.5 ounces. This converter handles fluid ounces (volume). For weight ounces, use the Weight Converter.
• Packing cups inconsistently: A cup of sifted flour weighs about 120 grams. A cup of scooped and packed flour can weigh 150 grams or more. Volume measurements are only as consistent as your measuring technique. For baking precision, weight measurements (grams) are more reliable than volume (cups). This converter does not account for packing density.

Authoritative Research and Resources

• NIST Weights and Measures - The National Institute of Standards and Technology defines the US customary units used in cooking, including the US cup (236.588 ml), tablespoon (14.7868 ml), and teaspoon (4.92892 ml), and their exact relationships to SI metric units.
• USDA Food Safety and Inspection Service - The USDA provides cooking temperature guidelines and measurement standards for recipes, including the distinction between volume and weight measurements in food preparation and nutrition labeling.