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Cups to Grams Converter: Flour, Sugar, Butter & More

Convert cups, tablespoons or teaspoons to grams, or grams back to cups, for flour, sugar, butter, milk, oil, honey and more, using USDA weights.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Scope: US customary measuring cups and spoons (1 cup = 8 fl oz = 16 tablespoons = 48 teaspoons) for the 21 ingredients in the list, using USDA household weights. Not included: metric, UK or Australian 250 mL cups, ingredients not in the list, cooked foods (cooked rice weighs very differently), brand-to-brand differences and milliliter conversions — for liquid volume only, use the Volume Converter. Weights come from USDA FoodData Central (SR Legacy) cup measures and the USDA FNS Food Buying Guide; ounces here are weight ounces (1 oz = 28.35 g, USDA ARS), not fluid ounces. Tablespoon and teaspoon results are scaled from the USDA cup weight, so they can differ by a gram or so from USDA’s own spoon weights. How you fill the cup changes the weight: flour and powdered sugar weigh more when packed and less when sifted. Results stay in your browser. Independent ToolsKo converter. Sources reviewed November 12, 2026.

How to use it (step by step)

  1. 1Pick the ingredient. For brown sugar and powdered sugar, choose the version that matches your recipe (packed or not, sifted or not).
  2. 2Type the amount — whole numbers, decimals or fractions like 1/2 or 1 1/2 all work — and pick the unit you have: cups, tablespoons, teaspoons, grams or ounces.
  3. 3Read the answer at the top. Going from grams, you also get tablespoons and teaspoons; for butter you get sticks too. A kitchen scale gives the most exact result.

Words to know

US cup
The standard American measuring cup: 8 fluid ounces, the same as 16 tablespoons or 48 teaspoons. Metric cups in the UK and Australia are a little bigger (250 mL).
Packed vs not packed
Packed means you press the brown sugar down firmly into the cup until it holds its shape. Not packed means you spoon it in loosely, so the same cup holds less sugar.
Sifted
Shaken through a fine strainer to break up lumps and add air. A cup of sifted powdered sugar weighs less than a cup spooned straight from the bag.
Ounce (weight) vs fluid ounce
A weight ounce (oz) is 28.35 grams and is measured on a scale. A fluid ounce (fl oz) measures space in a cup, so its weight depends on the food.

Explore tools for Australia, the US & Europe →

Sources & methods

References checked November 11, 2026. Read each tool’s scope and assumptions before relying on its result.

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