Cups to Grams Converter
Cups, tablespoons and teaspoons to grams and ounces for common baking ingredients, and back, plus plain kitchen volume conversions.
Result…
How it's calculated
Grams = volume in mL × (grams per US cup ÷ 236.5882 mL) Volume = grams ÷ (grams per US cup ÷ 236.5882 mL) US cup = 236.5882 mL · metric cup = 250 mL · US tbsp = 14.787 mL · US tsp = 4.929 mL · 1 oz = 28.3495 g
A cup measures volume, so how many grams it holds depends on the ingredient: a US cup of all-purpose flour is about 120 g, of granulated sugar about 198 g and of butter about 226 g. The ingredient weights here come from King Arthur Baking's published ingredient weight chart, which uses US cups (236.59 mL), tablespoons and teaspoons. A metric cup (250 mL) or imperial cup (284.13 mL) holds more, and the converter scales the weight by volume. For an ingredient that isn't listed, enter your own grams per cup from the packet or your scale. Flour weights assume it is spooned in and levelled; scooping packs more in. The volume mode converts between cups, spoons, fluid ounces and millilitres with exact factors.
Your numbers, step by step
About the Cups to Grams Converter calculator
This cups to grams converter turns a recipe's cups, tablespoons and teaspoons into grams or ounces, and weights back into cups, for about 35 common baking ingredients. A cup measures volume, so the grams depend on what is in it: a US cup of all-purpose flour is about 120 g, while the same cup of granulated sugar is about 198 g. The ingredient weights come from King Arthur Baking's ingredient weight chart, which uses US cups of 236.59 mL and US spoons. If your recipe uses a 250 mL metric cup or an old imperial cup, pick that unit and the weight is scaled by volume. For anything not on the list, enter your own grams per cup. A second mode converts plain volumes between cups, spoons, fluid ounces and millilitres with exact factors, and every answer shows the working. To weigh a whole recipe, convert it here and check the ratios with the baker's percentage calculator.
How to use it
- Choose “Ingredient volume ↔ weight”, then “Volume → weight” to weigh a measure or “Weight → volume” to measure out a weight.
- Pick the “Ingredient”, or “My own grams per cup” and type the figure from the packet or your scale.
- Enter the “Amount” and its “Volume unit”: US cup, metric cup, US or metric tablespoon, teaspoon, fluid ounce or millilitre.
- Choose grams, ounces, pounds or kilograms under “Weight unit”.
- For a straight volume conversion, choose “Volume ↔ volume” and set “Convert to”.
Worked example
A recipe asks for 2 1/2 US cups of all-purpose flour. King Arthur lists 1 cup as 120 g, so 2.5 × 120 = 300 g, which is about 10.58 oz. Going the other way, 150 g of granulated sugar at 198 g a cup is 150 ÷ 198 = 0.76 US cups, or about 12.1 US tablespoons.
Updated
Questions people ask
How many grams are in a cup of flour?
About 120 g for a US cup of all-purpose or bread flour, spooned in and levelled, according to King Arthur Baking's chart. Whole wheat flour is lighter at about 113 g a cup.
Why is a cup of sugar heavier than a cup of flour?
Sugar crystals pack more tightly than flour, so the same volume holds more weight. A US cup of granulated sugar is about 198 g, against about 120 g for flour.
Is a metric cup the same as a US cup?
No. A US cup is 236.59 mL and a metric cup is 250 mL, about 6% more. An imperial cup is 284.13 mL. The converter lets you choose which one your recipe means.
What mistake makes cup measurements unreliable?
Scooping flour straight from the bag packs it down and can add a noticeable amount to each cup. Spoon it into the cup and level it off, or better, weigh it.
How accurate are the gram figures?
They are rounded figures from one published chart, and real ingredients vary by brand, moisture and how they are filled. For baking where precision matters, weigh on a kitchen scale; for an ingredient not listed, enter your own grams per cup.