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Cups to Grams — The Complete Conversion Guide for Bakers

4 min read
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If you have ever followed an American recipe and wondered why your baked goods don't turn out quite right, inaccurate cup measurements are likely the culprit. Cups are a volume measurement, not a weight measurement — which means a cup of flour can vary by up to 30% depending on how it is scooped.

Why Weight Measurements Matter

Professional bakers almost universally use weight measurements rather than cups. A kitchen scale eliminates guesswork entirely and produces consistent results every time. If you don't own one yet, check out our recommended kitchen scales in our Kitchen Essentials section.

Common Ingredient Conversions

Ingredient1 Cup in Grams
All-purpose flour125g
Almond flour96g
Bread flour120g
Cake flour100g
Coconut flour112g
Whole wheat flour130g
Brown sugar (packed)220g
Granulated sugar200g
Powdered sugar120g
Butter227g
Cream cheese232g
Greek yogurt245g
Heavy cream238g
Sour cream230g
Whole milk244g
Baking powder230g
Chocolate chips170g
Cocoa powder85g
Cornstarch120g
Honey340g
Maple syrup322g
Peanut butter258g
Rolled oats90g
Salt273g
Vegetable oil218g

How to measure flour correctly

For the most accurate results, always use the spoon and level method — spoon flour into your measuring cup until it overflows, then level off the top with a straight edge. Never scoop directly from the bag as this compacts the flour and can add up to 30% more than the recipe intends. For guaranteed accuracy, use a digital kitchen scale every time.

How to Convert Cups to Grams

The easiest way is to use our free ingredient converter. Simply select your ingredient, enter the amount, and get an instant accurate conversion.

Try our free converter

Open ingredient converter

Investing in a simple digital kitchen scale is the single best upgrade any home baker can make. They cost as little as $15 and will immediately improve the consistency of your baking results. Browse our recommended scales in the Kitchen Essentials section.

Frequently Asked Questions

Q: How many grams are in 1 cup of flour?

A: One cup of all-purpose flour weighs approximately 125g using the spoon and level method. Bread flour is 120g and cake flour is 100g per cup.

Q: How many grams are in 1 cup of sugar?

A: One cup of granulated sugar weighs 200g. Brown sugar packed weighs 220g and powdered sugar is 120g per cup.

Q: How many grams are in 1 cup of butter?

A: One cup of butter weighs 227g which is equal to 2 sticks of American butter.

Q: Are US cups and UK cups the same?

A: No — a US cup is 236ml while a UK metric cup is 250ml. Always check which cup size your recipe uses especially for international recipes.

Q: Why do my baked goods turn out differently every time?

A: Inconsistent cup measurements are the most common cause. A cup of flour can vary by up to 30% depending on how it is scooped. Switching to weight measurements in grams eliminates this problem entirely.