How to Convert Cooking Measurements - Cups, Tablespoons, Grams, and More

Learn how to convert between cups, tablespoons, teaspoons, ounces, grams, and milliliters. Includes a quick reference chart and tips for accurate measurement.

Why Measurement Conversions Matter in Cooking

Recipes from different countries and eras use different measurement systems. American recipes rely on volume measures like cups and tablespoons, while European and professional recipes typically use weight in grams. Even within one system, you may need to convert between units when you only have certain measuring tools available. Getting conversions right is especially important in baking, where small errors in flour or liquid can change the texture of the final product. Mastering a handful of key conversion factors makes it easy to follow any recipe from any source.

Volume Conversions: Cups, Tablespoons, and Teaspoons

The US volume system is built on simple ratios. One cup equals 16 tablespoons, and one tablespoon equals 3 teaspoons. A half cup is 8 tablespoons, and a quarter cup is 4 tablespoons. One fluid ounce equals 2 tablespoons, and one cup equals 8 fluid ounces. Memorizing these core relationships lets you substitute any measuring tool you have on hand. If you only have a tablespoon measure and need a third of a cup, that is 5 tablespoons plus 1 teaspoon. These ratios apply to any liquid or dry ingredient measured by volume.

Converting Volume to Weight

Converting between cups and grams is not a fixed ratio because different ingredients have different densities. One cup of all-purpose flour weighs about 125 grams, while one cup of granulated sugar weighs about 200 grams and one cup of butter weighs about 227 grams. Water is the simplest: one cup equals 240 milliliters, which weighs 240 grams. For accurate conversions, look up the specific ingredient or use a kitchen scale. A scale eliminates guesswork entirely and produces consistently better results, particularly in baking where precision matters most.

Metric to Imperial Conversions

When following recipes from metric-system countries, you will encounter grams, kilograms, milliliters, and liters. The key conversions are: 1 ounce equals approximately 28.35 grams, 1 pound equals approximately 453.6 grams, 1 fluid ounce equals approximately 29.57 milliliters, and 1 cup equals approximately 236.6 milliliters. For practical purposes in the kitchen, rounding to 28 grams per ounce and 240 milliliters per cup is close enough. Temperature conversions are also common: to convert Fahrenheit to Celsius, subtract 32 and multiply by 5/9. An oven at 350 degrees F is about 177 degrees C.

Measuring Dry Ingredients Correctly

How you measure dry ingredients affects the actual amount you use. The spoon-and-level method is the gold standard for measuring flour: spoon flour into the measuring cup until heaped, then level off the top with a straight edge. Scooping the cup directly into the flour bag compacts it and can add 20-30% more flour than intended. Sugar, on the other hand, can be scooped directly because its granules do not pack as unpredictably. Brown sugar is an exception and should be firmly packed into the cup. For the most consistent results, weigh dry ingredients on a digital kitchen scale.

Measuring Liquids Correctly

Liquid ingredients should be measured in a clear liquid measuring cup placed on a flat surface. Read the measurement at eye level, looking at the bottom of the meniscus (the curved surface of the liquid). Dry measuring cups are not interchangeable with liquid measuring cups for precise work. A dry cup of water and a liquid cup of water hold the same volume, but it is nearly impossible to fill a dry cup with liquid to the exact brim without spilling. Sticky liquids like honey or molasses are easier to measure if you lightly oil the cup or spoon first so the liquid slides out cleanly.

Quick Reference Conversion Chart

Here are the conversions you will use most often. 1 tablespoon = 3 teaspoons = 15 mL. 1 cup = 16 tablespoons = 48 teaspoons = 240 mL. 1 pint = 2 cups = 480 mL. 1 quart = 4 cups = 960 mL. 1 gallon = 4 quarts = 16 cups. 1 ounce = 28.35 grams. 1 pound = 16 ounces = 453.6 grams. 1 kilogram = 2.205 pounds. Printing this chart and keeping it in your kitchen saves frequent lookups and speeds up your prep work.

Australian and UK Measurement Differences

Not all English-speaking countries use the same cup size. A US cup is 236.6 mL, an Australian cup is 250 mL, and a UK cup (though rarely used in modern British recipes) is 284 mL. Australian tablespoons are also larger: 20 mL compared to the US 15 mL. British recipes tend to use weights (grams and ounces) rather than cups, which avoids this confusion entirely. When following a recipe from another country, check which measurement standard it uses and convert accordingly to avoid unexpected results.

Try These Calculators

Put what you learned into practice with these free calculators.

Cups to Grams Converter Tablespoons to mL Converter Ounces to Grams Converter