Grams to Cups Converter

Convert grams to cups — or cups back to grams — for flour, sugar, butter, and other common baking ingredients. Because a cup of flour and a cup of sugar weigh very differently, this converter uses each ingredient's real density.

Why Grams to Cups Depends on the Ingredient

A cup is a measure of volume, but a gram is a measure of weight, so there is no single conversion between them — it depends entirely on the ingredient's density. One cup of all-purpose flour weighs about 125 grams, but one cup of granulated sugar weighs about 200 grams and one cup of honey weighs about 340 grams. That is why serious bakers weigh ingredients in grams: it is far more accurate than scooping cups, which can vary by 20% or more depending on how packed the flour is.

Cups = Grams ÷ (grams per cup)  ·  Grams = Cups × (grams per cup)

Common Baking Conversions

Here are the standard weights this converter uses, in grams per US cup: all-purpose flour 125, cake flour 120, granulated sugar 200, packed brown sugar 220, powdered sugar 120, butter 227 (two sticks), honey 340, rolled oats 95, chocolate chips 170, cocoa powder 125, and water or milk 240. These match the values most American recipe sites and the King Arthur Baking weight chart use.

Tips for Accurate Baking

For the best results, use a kitchen scale and weigh in grams whenever a recipe gives weights — especially for flour, where scooping packs in extra and leads to dry, dense results. When you must use cups, spoon the flour into the cup and level it off with a knife rather than scooping directly from the bag. This converter goes both directions, so you can translate a metric recipe into cups or convert your cup-based family recipe into precise grams.

Frequently Asked Questions

How many grams are in one cup of flour?
One US cup of all-purpose flour weighs about 125 grams. Cake flour is lighter at around 120 grams per cup, while whole wheat flour is slightly heavier. Because scooping can pack in extra, weighing flour is the most reliable method.
Why can't I use one conversion for all ingredients?
Because grams measure weight and cups measure volume, the conversion depends on density. A cup of flour (125 g), a cup of sugar (200 g), and a cup of honey (340 g) all weigh different amounts, so each ingredient needs its own conversion factor.
How many grams are in a cup of sugar?
One cup of granulated white sugar weighs about 200 grams. Packed brown sugar is denser at roughly 220 grams per cup, and powdered (confectioners') sugar is lighter at about 120 grams per cup.
How many grams of butter are in a cup?
One cup of butter weighs about 227 grams, which equals two standard US sticks (each stick is 113 grams or half a cup). Most American butter packaging marks tablespoon lines on the wrapper to help.
Is it better to bake by weight or by volume?
Weight is more accurate. Measuring in grams removes the variability of how tightly you pack a cup, which is why professional and metric recipes use grams. If you bake often, a digital kitchen scale will make your results far more consistent.