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Cups to Grams: Why It Depends on the Ingredient

A cup is a measure of volume, but grams measure weight — and different ingredients have very different densities, so one cup is never one fixed weight.

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Step by step

  1. A cup of all-purpose flour is about 125 g, but a cup of granulated sugar is about 200 g.
  2. Honey (≈340 g/cup) is far heavier than the same cup of flour.
  3. Light, fluffy items (powdered sugar, oats) weigh less per cup than dense ones (rice, honey).
  4. How you fill the cup (scooped vs spooned, packed vs loose) also changes the weight.
  5. For accuracy, use the per-ingredient chart and a kitchen scale instead of cups.

FAQ

Is 1 cup always 240 grams?

No. 240 ml is the volume of a US cup, but the weight in grams depends entirely on the ingredient — from about 90 g of oats to 340 g of honey.

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