Cooking Conversion Calculator
Convert cups, tablespoons, teaspoons and milliliters to grams, ounces and more for everyday cooking ingredients. Choose an ingredient, enter a whole number or fraction, and get an instant measurement.
Convert Ingredient Measurements
Select an ingredient before converting between volume and weight.
Spoon into cup and level; avoid packing.
Editable reference, useful when your recipe or product label gives a different weight.
1 US cup of all-purpose flour is approximately 120 grams.
Popular cooking conversions
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How to Use the Cooking Conversion Calculator
This ingredient converter is for recipes where a measurement must move between a volume unit and a weight unit. A cup of flour does not weigh the same as a cup of sugar, so the ingredient choice matters. The tool uses a reference weight for each ingredient rather than treating all cups as equal grams.
Choose the ingredient
Select flour, sugar, butter, dry rice or another ingredient. Check its preparation note.
Enter an amount
Type 1, 0.5, 3/4 or 1 1/2. Change either measurement and its unit.
Read the result
See an approximate ingredient weight or volume, copy it, or consult the chart below.
Cooking measurements are estimates. Ingredient variety, humidity, sifting, scooping, packing and brand can affect weight. For precision baking, follow the recipe’s own gram amount or use a kitchen scale.
Cups to Grams Conversion Chart
The chart below changes with the selected ingredient and the editable grams-per-US-cup reference. It shows common US cup fractions alongside estimated grams and ounces.
| US cups | Grams of flour | Weight in ounces |
|---|---|---|
| ¼ cup | 30 g | 1.058 oz |
| ½ cup | 60 g | 2.116 oz |
| 1 cup | 120 g | 4.233 oz |
Reference: 120 g per US cup of all-purpose flour, spooned and leveled.
How Cooking Conversions Work
For a chosen ingredient, we store the estimated weight of one US customary cup. Converting a volume measurement into grams first expresses its volume in milliliters, then applies the ingredient’s reference density. Converting from grams to cups reverses that calculation.
Example — 1½ cups all-purpose flour: with 120 g per US cup, 1½ × 120 = 180 g.
Example — 100 g granulated sugar: at 198 g per US cup, 100 ÷ 198 ≈ 0.505 US cups.
The formula for your selected units updates above the chart.
In this tool a US customary cup equals approximately 236.588 mL, while a metric cup equals 250 mL. A US tablespoon is approximately 14.787 mL, and a US teaspoon is approximately 4.929 mL. The cup standard affects how much of an ingredient is measured.
Ingredient Reference Weights
These are working kitchen references, not guaranteed weights for every brand. The calculator uses published ingredient-weight charts where available and scales some tablespoon or teaspoon references to a cup. If your recipe specifies a different weight, type it into the editable reference field.
| Ingredient | Approx. grams per US cup | Preparation |
|---|---|---|
| All-purpose flour | 120 g | Spoon into cup and level; avoid packing. |
| Bread flour | 120 g | Spoon and level; brand may differ. |
| Whole wheat flour | 113 g | Spoon and level; bran changes packing. |
| Granulated white sugar | 198 g | Level cup; do not compress. |
| Brown sugar (packed) | 213 g | Gently pack as called for by the recipe. |
| Powdered sugar (unsifted) | 113 g | Unsifted reference; sifted sugar weighs less. |
| Butter | 226 g | 1 US cup ≈ 2 sticks; one stick ≈113 g. |
| Cocoa powder (unsweetened) | 84 g | Spoon and level; do not compress. |
| Baking soda | 288 g | Derived from 3 g per ½ US teaspoon; use a level spoon. |
| Baking powder | 192 g | Derived from 4 g per US teaspoon; level spoon. |
| Instant dry yeast | 144 g | Approx. 3 g per US teaspoon; product brands vary. |
| Active dry yeast | 144 g | Approx. 3 g per US teaspoon; follow package weight when available. |
| White rice (uncooked) | 198 g | Long-grain dry rice; cooked rice weighs differently. |
| Water | 236.588 g | Approximate weight at typical kitchen temperature. |
| Fresh milk | 227 g | Reference from baking chart; milk composition varies. |
| Vegetable oil | 198 g | Liquid oil; brand and temperature affect measured weight. |
| Honey | 336 g | Scaled from 21 g per US tablespoon (×16). |
| Rolled oats (old-fashioned) | 89 g | Old-fashioned or quick-cooking reference; not prepared oats. |
| Table salt (fine) | 288 g | Scaled from 18 g per US tablespoon (×16). |
| Cornstarch | 112 g | Scaled from 28 g per ¼ US cup (×4). |
Values are based primarily on King Arthur Baking’s ingredient chart, with selected cooking references noted as approximate. Different charts may use different measuring methods.
US Cups, Metric Cups, and Butter Sticks
One common source of recipe mistakes is measuring with a cup of a different size from the recipe’s cup. The US customary cup is approximately 236.588 mL, whereas a metric cup is 250 mL. If your recipe uses metric cups, select that unit explicitly.
The butter-stick option appears only when you choose butter. One US stick represents about half a US cup of butter, usually around 113 grams. This is not a standard unit for flour, rice or other ingredients.
For ordinary volume-to-volume conversions such as liters to gallons, visit your existing Volume Converter. This Cooking Conversion Calculator is designed for ingredient-specific weights.
Frequently Asked Questions
How many grams are in one cup of flour?
Using the all-purpose flour reference on this page, one US cup is about 120 grams when spooned into the cup and leveled. Other scooping methods and flours can give different weights.
Is one cup of flour the same weight as one cup of sugar?
No. Our reference for a cup of all-purpose flour is 120 grams; granulated white sugar is approximately 198 grams per US cup. Ingredient and packing method both matter.
Can I enter fractions such as ¾ or 1 ½?
Yes. The calculator accepts ordinary decimals, simple fractions such as 3/4, and mixed fractions such as 1 1/2. It also accepts common fraction characters.
Can I turn grams back into cups?
Yes. Select Grams as the source unit and US Cups or Metric Cups as the destination. The estimated volume will be based on the selected ingredient.
What is the difference between a US cup and a metric cup?
A US customary cup holds approximately 236.588 mL; a metric cup is 250 mL. The same ingredient will weigh more when measured with a larger cup.
How many grams are in one stick of butter?
A US stick of butter is generally around 113 grams. The calculator offers butter sticks only with Butter selected and allows you to adjust the ingredient reference.
Why is my recipe’s flour weight different?
Flour may be sifted, packed, scooped or spooned into a measuring cup. Brands also vary. Use the gram amount printed by your recipe when it is available.
Does this tool replace the Volume Converter?
No. The Volume Converter handles volume units directly. This tool handles ingredient-specific volume-to-weight conversions, such as cups of flour to grams.
Related Conversions and References
Measurement references: King Arthur Baking — Ingredient Weight Chart, and NIST — Unit Conversion. Measurements are approximations unless an exact standardized unit relationship applies.