You're Reading a Recipe in Grams, but Your Kitchen Scale Is Broken
A recipe calls for 240 grams of flour, but you only have measuring cups. Or it lists everything in milliliters, and you need tablespoons. Cooking measurements aren't universal, some recipes use weight, others use volume, and some mix both. You need to convert, but you can't do it in your head without making mistakes.
What This Calculator Does
This cooking measurement converter instantly translates between all standard kitchen units: cups to tablespoons, tablespoons to teaspoons, cups to milliliters, grams to ounces, and dozens of other conversions. You input a measurement and unit, and the calculator shows equivalents in every other common cooking unit. No more searching for conversion charts or guessing whether "a pinch" of salt equals a quarter teaspoon or an eighth.
How to Use This Calculator
Enter your starting measurement (the amount you have) and select the unit (cups, grams, tablespoons, etc.). Then choose the unit you want to convert to. The calculator instantly shows the equivalent.
For example: You have a recipe that calls for 8 fl oz butter, but you want to know how many tablespoons that is. Enter "8" in the amount field, select "fl oz" as the unit, then choose tablespoons as your target unit. The calculator displays "16 tablespoons."
This works in both directions. If you have 3 tablespoons and want to know how many teaspoons that is, enter 3, select tablespoons, and convert to teaspoons, the answer is 9.
For weight-to-volume conversions (like grams to cups), keep in mind that these depend on what ingredient you're measuring. 240 grams of flour is different from 240 grams of honey because they have different densities. Some calculators offer ingredient-specific conversions; if yours does, select your ingredient to get the most accurate result.
The Formula Behind the Math
Cooking measurements fall into two categories: volume (cups, teaspoons, milliliters) and weight (grams, ounces, pounds).
Volume conversions are exact:
Weight conversions:
Volume-to-weight conversions depend on the ingredient. Water and milk are nearly the same density, so 1 cup of water โ 240 grams. But flour is less dense: 1 cup of all-purpose flour โ 120โ125 grams. Sugar is denser: 1 cup of granulated sugar โ 200 grams. Butter is even denser: 1 cup (8 oz) of butter โ 227 grams.
Let's work through an example. You have a French recipe calling for 250 grams of flour, but you only have measuring cups.
For better precision, many bakers use weight when possible. A kitchen scale removes the guesswork. If you must convert volume to weight, ingredient-specific conversion factors are essential.
Here are common ingredient densities (grams per cup):
Our calculator does all of this instantly, but now you understand exactly what it's computing.
Converting Between Imperial and Metric
Many modern recipes use metric measurements (grams and milliliters) because they're more accurate than volume measures. If you're comfortable with metric, you'll find recipes easier to follow and more likely to succeed.
For liquid recipes (soups, sauces, dressings), milliliters and cups are virtually interchangeable in volume: 1 cup โ 240 mL. But for baking, weight (grams) is far superior to volume measures. Flour density changes based on how it's packed, scooped, or aerated. A cup of flour can weigh anywhere from 110g to 150g depending on technique. Using grams eliminates this variability.
When converting a volume recipe to metric, look up the weight per cup of each ingredient you're using. Multiply the number of cups by the ingredient-specific conversion factor, and you'll have a more accurate recipe to follow going forward.
Ingredient-Specific Conversions
Some ingredients don't follow neat conversion rules because they're dense, liquidy, or crumbly. Coconut flour is lighter than wheat flour, so 1 cup โ 90g. Peanut butter is dense and sticky: 1 cup โ 256g. Shredded cheese is airy: 1 cup โ 115g. Most conversion calculators worth their salt offer ingredient-specific options.
When you're converting an unfamiliar ingredient, measure one cup on a kitchen scale to find your ingredient's conversion factor, then scale up or down from there. Write it down in your recipe book for future reference.
Measuring Correctly to Avoid Conversion Errors
How you measure volume affects the weight you get. If you scoop flour directly into a measuring cup with a spoon, you'll pack it more densely than if you spoon flour into the cup and level it. Professional bakers avoid this problem entirely by using weight.
If you're measuring by volume, follow this technique for consistency:
This gives you a relatively consistent measure every time. It's still less precise than weight, but it's more reliable than scooping directly.
Tips and Things to Watch Out For
Fluid ounces and regular ounces are different. A fluid ounce (fl oz) is a volume measure; an ounce (oz) is a weight measure. 1 fl oz of water happens to weigh 1 oz, but 1 fl oz of honey weighs about 1.5 oz. Read the recipe carefully to see which it specifies.
US and metric tablespoons aren't identical. A US tablespoon is 14.787 mL; a metric tablespoon is 15 mL. For most cooking, this tiny difference doesn't matter, but in precision baking, it adds up.
Volume measures for baked goods are inherently unreliable. Serious bakers and cookbook authors increasingly use grams exclusively. If you bake regularly, invest in a kitchen scale. It costs $15โ30 and eliminates dozens of conversion headaches.
When scaling recipes, weigh when possible. It's easier and more accurate to multiply weights than to try to divide cups into thirds or quarters.
Butter weight vs. block size varies. One stick of butter (sold in the US) is 4 ounces or 113 grams, but the exact weight varies slightly by brand. When precision matters, weigh it.
Frequently Asked Questions
How many tablespoons are in a cup?
16 tablespoons equal 1 cup. So half a cup is 8 tablespoons, and a quarter cup is 4 tablespoons.
How many teaspoons in a tablespoon?
3 teaspoons equal 1 tablespoon. A teaspoon is one-third of a tablespoon.
How much is 240 grams in cups?
It depends on the ingredient. 240 grams of water or milk โ 1 cup. 240 grams of flour โ 2 cups. 240 grams of sugar โ 1.2 cups. Always verify the ingredient-specific conversion.
Why does my recipe fail when I convert volume measurements?
Flour, baking soda, and baking powder are especially sensitive to weight variations. Use ingredient-specific conversion factors, or better yet, weigh all dry ingredients. Even slightly too much flour can ruin a cake.
Is a fluid ounce the same as an ounce?
No. Fluid ounces measure volume; ounces measure weight. A fluid ounce of water happens to weigh 1 ounce, but this doesn't hold for other ingredients. Always check what the recipe specifies.
Can I just assume all volume-to-weight conversions?
No. Different ingredients have different densities. Look up ingredient-specific conversions or measure one cup on a scale to establish a baseline. Assuming all ingredients have the same density will ruin recipes.
Related Calculators
Use our recipe scaling calculator to adjust ingredient quantities when you're changing serving sizes. Our cooking unit converter handles more specialized conversions. The temperature converter helps if your recipe uses Fahrenheit and you work in Celsius, or vice versa.