Cups to grams, with the ingredient detail that matters
A practical US volume-to-weight calculator for flour, sugar, butter, oats, honey, rice, and more.
Recipes often list flour and sugar by volume while a kitchen scale measures mass. That is not a problem as long as the ingredient is part of the calculation. A cup of honey is compact and heavy; a cup of rolled oats contains much more air. KitchenCalc keeps those differences visible instead of presenting one misleading universal answer. Select an ingredient, enter cups, tablespoons, or teaspoons, and the result appears in grams with a practical ounce estimate.
The calculator uses US cups and a simple density table measured in grams per US cup. One cup is treated as 16 tablespoons or 48 teaspoons, so a tablespoon is one-sixteenth of a cup and a teaspoon is one-forty-eighth. These are useful kitchen conversions, not a promise that every scoop is packed identically. Flour can be spooned and leveled, sugar can be compacted, and humidity can change how ingredients settle.
For everyday baking, grams are usually the steadier target because they do not depend on how a measuring cup was filled. Ounces are included for readers who shop or cook with an imperial scale. If a recipe says packed brown sugar, choose the packed brown sugar entry rather than granulated sugar. If your ingredient is not in the list, use the closest verified source for that specific ingredient rather than guessing from a different food.
Use the formula as a quick check: cups in the chosen unit multiplied by grams per cup gives grams, and grams divided by 28.35 gives ounces. Keep the result as a starting point when a recipe is very sensitive to texture. A dough, batter, or syrup may still need visual checks because measuring technique and ingredient brand can shift the final consistency.
Reference table
| Ingredient | Grams per US cup |
|---|---|
| All-purpose flour | 125 g |
| Granulated sugar | 200 g |
| Butter | 227 g |
| Honey | 340 g |
| Rolled oats | 90 g |
Worked example
Example: 3 tablespoons of granulated sugar are 37.5 g because 3 ÷ 16 × 200 = 37.5 g, or about 1.32 oz.
Frequently asked questions
Why is flour lighter than sugar?
Flour particles hold more air and are commonly spooned into a cup, while granulated sugar packs more tightly.
Should I use grams for baking?
A scale is often more repeatable, especially for flour, but the calculator still gives a useful volume estimate.