Cups to Grams Converter
Convert cups to grams for any ingredient. Accurate weight conversions for precise baking.
1 cup All-Purpose Flour
120g
Note: All-Purpose Flour weighs about 120 g per US cup. Flour weight can vary by ±10% or more depending on measurement method, brand, compaction, and humidity. For baking precision, weighing is more reliable than measuring by volume.How to measure: Spoon flour into the cup and level off with a straight edge. Do not scoop.
All-Purpose Flour — all units
| Grams | 120 g |
| Ounces | 4 1/4 oz |
| Cups | 1 cup |
| Tablespoons | 16 tablespoons |
| Teaspoons | 48 teaspoons |
| Milliliters | 236.59 ml |
Conversion Summary
How it works
Cups measure volume and grams measure mass, so there is no single cups-to-grams conversion. Each ingredient has a different density — 1 cup of flour weighs about 120 g, while 1 cup of sugar weighs about 200 g. Select your ingredient above and Cookometry will use the correct weight reference for that ingredient.
Conversion Table
| Grams | 120 g |
| Ounces | 4 1/4 oz |
| Cups | 1 cup |
| Tablespoons | 16 tablespoons |
| Teaspoons | 48 teaspoons |
| Milliliters | 236.59 ml |
Common Cups to Grams Conversions
Weights are based on Cookometry's ingredient database and use the US customary cup (236.6 mL). Values are approximate — ingredient density varies by brand and measuring method.
| Ingredient | 1 cup | 1/2 cup | 1/3 cup | 1/4 cup |
|---|---|---|---|---|
| All-Purpose Flour | 120 g | 60 g | 40 g | 30 g |
| Granulated Sugar | 200 g | 100 g | 67 g | 50 g |
| Brown Sugar | 220 g | 110 g | 73 g | 55 g |
| Butter | 227 g | 114 g | 76 g | 57 g |
| Milk | 240 g | 120 g | 80 g | 60 g |
| Honey | 340 g | 170 g | 113 g | 85 g |
| Cocoa Powder | 86 g | 43 g | 29 g | 22 g |
| Rolled Oats | 90 g | 45 g | 30 g | 23 g |
Why Cups Don't Convert Directly to Grams
A cup is a measure of volume, while a gram is a measure of mass. There is no single universal conversion between them because each ingredient has a different density.
For example, one US cup of all-purpose flour weighs about 120 grams, while one cup of granulated sugar weighs about 200 grams. The same volume holds very different weights depending on what you put in it.
That's why Cookometry always asks you to select an ingredient before converting cups to grams — the correct answer depends on what you're measuring.
US Cups vs. Metric Cups
Cookometry uses the US customary cup, which is defined as 236.6 mL (often rounded to 237 mL). A metric cup — used in Australia, New Zealand, and some other countries — is 250 mL, which is about 5% larger. If a recipe was written using metric cups, the gram weights shown here will be slightly low. Most recipes published in the United States use the US customary cup.
Why Weigh Ingredients for Baking?
Weighing ingredients gives you consistent results every time, especially with ingredients like flour whose volume changes depending on how it's scooped, spooned, sifted, or packed. A cup of flour can vary by 20% or more between measuring methods — enough to change the texture of a cake or cookie. A digital kitchen scale removes that guesswork and is the most reliable way to follow a baking recipe.