Cup to Gram Converter
Convert U.S. cup measurements to grams for common baking ingredients — flour, sugar, butter, milk, oil, and more.
What is Cup to Gram Converter?
The cup to gram converter handles the unit conversion that trips up every American baker: U.S. cups are volume, but recipes (especially European ones) often use grams (weight). Different ingredients have very different weights per cup.
Formula
Each ingredient has a published weight per U.S. cup (240 ml). The calculator multiplies your cup count by the ingredient's weight per cup.
Worked example
1 cup all-purpose flour ≈ 120 g. 1 cup granulated sugar = 200 g. 1 cup honey = 340 g — almost 3× as heavy as flour.
How to use this calculator
- Enter how many cups you have.
- Pick the ingredient.
- The weight in grams (and ounces) appears.
Frequently asked questions
Why are the values different per ingredient?
Density varies. Flour packs air into a cup (low density); honey is thick (high density); sugar is in-between.
Why do flour amounts vary by source?
Different baking sources publish slightly different cup weights for flour: 120g (King Arthur), 125g (some EU sources), 128g (USDA). All are close — the variability comes from how tightly flour packs.
Should I use weight instead of cups?
For baking, yes. Weight gives reproducible results recipe-to-recipe. A digital kitchen scale ($15–25) eliminates measuring errors.
Are American cups the same as British or Australian?
No. U.S. cup = 240 ml. Australian cup = 250 ml. UK Imperial cup = 284 ml (rare in modern recipes). Always check the source.