Cups to Grams Converter

Convert cups to grams for accurate baking — with the crucial catch that every ingredient weighs differently. A cup of flour and a cup of sugar are not the same weight, so pick the ingredient and get the right conversion.

How to use this calculator

Enter the amount and choose the direction (cups→grams or back).
Select the exact ingredient — each has a different weight per cup.
Use the gram figure; weighing beats cups for baking accuracy.

Formula used

Grams = cups × grams-per-cup (specific to the ingredient)

There's no single cups-to-grams conversion because it depends on density: a cup of flour is ~125 g, sugar ~200 g, honey ~340 g. Each ingredient has its own weight per cup, which is why substituting a generic conversion ruins recipes.

Example calculation

Worked example

1 cup of flour = 125 g, but 1 cup of sugar = 200 g — same volume, very different weight.

2 cups of honey is a hefty 680 g, while 2 cups of oats is only 180 g.

Why cups betray bakers

Cup measurements are a volume, but baking is chemistry that depends on mass — and different ingredients pack very differently into the same cup. A cup of feathery flour weighs a fraction of a cup of dense honey, so a single "cups to grams" number can't exist; you need the specific ingredient's density. Using the wrong one is a classic reason a converted recipe fails.

Worse, even the same ingredient varies: a cup of flour can range from about 120 to 150 grams depending on whether it's sifted, spooned or scooped and packed, which is why cup-measured baking is inconsistent between cooks. This is the case for a kitchen scale — weighing in grams removes the ambiguity entirely and is why professional and serious home bakers work by weight. This converter gives sensible standard densities per ingredient, but a scale is the real accuracy upgrade.

Why use this calculator?

Correct conversion for each ingredient, not a one-size-fits-all number.
Convert US-cup recipes to metric grams for accuracy.
Understand why weighing beats cup measures for baking.

Frequently asked questions

How many grams in a cup?

It depends entirely on the ingredient. A cup is about 125 g of flour, 200 g of granulated sugar, 227 g of butter, 240 g of water and 340 g of honey. There's no universal conversion because density varies.

Why isn't there one cups-to-grams conversion?

Because a cup measures volume, and different ingredients have different densities. The same cup holds far more weight of a dense ingredient (honey, sugar) than a light one (flour, oats). You must convert per ingredient.

Should I use cups or a scale for baking?

A scale, whenever possible. Cup measures vary with how you scoop and pack — a cup of flour can differ by 20% or more between cooks — while grams are exact. Weighing gives consistent, repeatable results.