Baking Conversion Calculator

The Baking Conversion Calculator is a free, private browser tool that converts 25 baking ingredients between cups, tablespoons, teaspoons, grams, ounces, milliliters, pounds and kilograms. It uses each ingredient's own weight per cup, so a cup of flour and a cup of sugar give different grams, and it converts sticks of butter in one tap. Updated 2026-10-30.

How Baking Conversions Work

Baking conversion is not as simple as using a single multiplier for every ingredient. Unlike water, where 1 cup always equals 240 milliliters, baking ingredients have different densities. One cup of all-purpose flour weighs about 120 grams, while one cup of granulated sugar weighs around 200 grams. Brown sugar packed into a cup weighs even more at 220 grams, and butter sits at approximately 227 grams per cup. Using generic volume-to-weight converters leads to inaccurate measurements that can ruin baked goods.

This calculator uses ingredient-specific density data sourced from King Arthur Baking, USDA, and professional pastry references. When you select an ingredient, it applies that exact conversion factor rather than a generic estimate. This matters most when baking bread, pastries, and delicate cakes where even a 10-gram difference in flour can change the texture significantly. Professional bakers always measure by weight for consistency, and this tool bridges the gap between volume-based recipes and precise weight measurements.

Baking Conversions for Common Ingredients

Flour is the most commonly converted ingredient because recipes from different countries use different measurement systems. American recipes use cups, while European and professional recipes use grams. All-purpose flour weighs about 120 grams per cup, bread flour is slightly heavier at 130 grams, and cake flour is lighter at 114 grams due to its finer texture. Whole wheat flour weighs around 128 grams per cup because of its coarser grind and bran content.

Sugar conversions are equally important. Granulated white sugar is denser than flour at 200 grams per cup. Brown sugar is measured packed, bringing it to 220 grams per cup. Powdered sugar is the lightest at 120 grams per cup because of all the air trapped between its fine particles. Liquid sweeteners like honey and maple syrup are measured by volume and weight differently than dry ingredients, which is why selecting the correct ingredient in this calculator gives you precise results every time.

Cake Flour to All-Purpose Flour Conversion

Cake flour and all-purpose flour do not swap one-for-one by the cup. Cake flour is finer and lower in protein, so a cup of it weighs about 114 grams against about 120 grams for all-purpose. To replace one cup of cake flour, measure one cup of all-purpose flour, take out 2 tablespoons, add 2 tablespoons of cornstarch and sift them together twice. Going the other way, use one cup of cake flour plus 2 tablespoons for each cup of all-purpose flour, and expect a softer crumb. If the recipe gives grams, keep the same grams: weight does not change between the two flours, only the volume does. Cup weights for flours, sugars and fats in this calculator follow the USDA FoodData Central portion data and King Arthur Baking's ingredient chart.

Baking Measurement Conversion for Butter Sticks

American recipes often list butter in sticks, while European recipes use grams. One US stick is half a cup, or 8 tablespoons, and the wrapper is marked in tablespoons, so you can cut exactly what you need. Tap 1/2 stick, 1 stick or 2 sticks under the amount box: the calculator switches the ingredient to butter and shows the weight in grams, which you can change to ounces or cups with the To menu. European butter is sold in blocks, so weigh it rather than counting sticks.

Tips for Accurate Baking Measurements

The most reliable way to measure baking ingredients is by weight using a digital kitchen scale. A scale eliminates the variability of how tightly someone packs flour into a measuring cup. The spoon-and-level method — where you spoon flour into a cup and level it off with a knife — gives more consistent results than scooping directly from the bag, which compacts the flour and adds extra weight. If a recipe lists both volume and weight measurements, always use the weight for best results.

When converting between metric and imperial, remember that ounces in baking always mean weight ounces, not fluid ounces. Fluid ounces measure volume and are used for liquids like milk and water. One fluid ounce of water happens to weigh about one ounce, but this equivalence breaks down for other ingredients. Butter, for example, is denser than water, so 1 fluid ounce of melted butter weighs more than 1 ounce. This calculator handles these distinctions automatically based on the ingredient you select.

Why Precision Matters in Baking

Baking is fundamentally different from cooking because it relies on precise chemical reactions. The ratio of flour to liquid determines gluten development, the amount of sugar affects caramelization and moisture retention, and leavening agents need exact proportions to create the right amount of rise. Too much flour makes cakes dense, too little sugar prevents proper browning, and an extra half teaspoon of baking soda can leave a metallic taste. Converting measurements accurately is not just about convenience — it directly impacts whether your recipe succeeds or fails.