Baking Conversion Calculator
Select an ingredient and enter a volume amount to see its precise weight in grams and ounces. Perfect for baking where weight accuracy matters.
Reviewed by the ToolNestr Editorial Team — July 2026
Select an ingredient and enter a volume to see the weight.
How it works
Every ingredient has a unique density — the weight of a fixed volume. A cup of granulated sugar weighs about 200 g, while a cup of all-purpose flour weighs about 120 g. This calculator stores the density (grams per cup) for each common baking ingredient and multiplies your entered volume by that density to give you the precise weight.
The density values come from established references used by professional bakers and food scientists. They represent the average across multiple measurements and brands. Individual brands can vary slightly, but these figures are accurate enough for virtually all home and commercial baking applications. For the most reliable results, use the spoon-and-level method when measuring flour by volume, or better yet, weigh everything on a digital kitchen scale.
How the conversion works
The formula is simple: weight = volume × density. The density is the grams-per-cup value for the ingredient. The calculator also converts grams to ounces by dividing by 28.35, since 1 ounce = 28.35 grams.
Worked example
A bread recipe calls for 2.5 cups of bread flour. What is that in grams and ounces?
Bread baker
Convert cup-based bread recipes to gram measurements for consistent hydration levels and reliable dough behaviour batch after batch.
Cake decorator
Precise sugar and flour weights ensure your cake layers are level, your buttercream is consistent and your final product looks professional.
Recipe developer
Convert your cup-based recipes into weight-based instructions so your readers or clients get reproducible results every time they bake.
Gluten-free baker
Gluten-free flours (almond, coconut, rice) have different densities. Convert precisely to maintain the delicate structure of gluten-free bakes.
How to use the Baking Conversion Calculator
Pick your ingredient
Choose from the dropdown list of common baking ingredients. Each has its own stored density value that the calculator uses.
Enter the volume
Type the volume amount and choose whether it is in cups, tablespoons or teaspoons. All units convert to the same gram weight.
Read the weight
See the result in both grams and ounces. Use these figures to weigh your ingredients on a digital kitchen scale for best results.
Tips for best results
Always use a digital kitchen scale
A good digital scale costs very little and transforms your baking. Weighing ingredients eliminates the variability of scooping, packing and levelling, giving you consistent results every time.
Adjust for brown sugar packing
Brown sugar is measured packed unless otherwise specified. The calculator assumes packed brown sugar at 220 g per cup. If your recipe specifies "lightly packed" or "unpacked", reduce the weight by 10–15 percent.
Flour density varies by brand
Different brands of flour have slightly different densities. The 120 g per cup value is a standard average. If you find your doughs are consistently too wet or too dry, adjust by 5–10 g per cup as needed.
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Frequently asked questions
Why convert volume to weight for baking?
Baking is a science — the ratio of flour to sugar to fat determines the structure of your cake, bread or pastry. Weight measurements are far more accurate than volume because the density of flour can vary dramatically depending on how it is scooped. A cup of spooned flour weighs about 120 g, while a cup of scooped flour can weigh 150 g or more, changing the recipe entirely.
What densities does this calculator use?
This calculator uses standard reference densities from the King Arthur Baking Company and the USDA National Nutrient Database. All-purpose flour is 120 g per cup, granulated sugar is 200 g per cup, butter is 227 g per cup, and so on. These are widely accepted values used by professional bakers.
Can I convert any ingredient?
This tool covers the most common baking ingredients: all-purpose flour, bread flour, whole wheat flour, granulated sugar, brown sugar, powdered sugar, butter, milk, honey, cocoa powder and rolled oats. Each has a unique density that the calculator applies automatically.
How do I measure flour correctly by volume?
For the most accurate volume measurement, spoon the flour into your measuring cup and level it off with a straight edge — never scoop directly from the bag, as that compacts the flour. Using the spoon-and-level method gives a consistent 120 g per cup for all-purpose flour.
Is it better to bake by weight or volume?
Weight is always more accurate and repeatable, which is why professional bakeries use scales, not cups. If you own a kitchen scale, use the gram values from this calculator for every ingredient — your baking will be more consistent and your results more predictable.