GCups2Grams Open Chart

Conversion Chart

Cups to Grams Chart

A practical cups to grams chart for common cup fractions and ingredient weights when you need a fast prep reference.

Quick Answer

A cups to grams chart helps when a recipe starts with cups but you want weight values for more consistent measuring. The key is to match the ingredient carefully, because one cup of flour, sugar, butter, and oats do not weigh the same.

This chart uses US customary cup values and the same ingredient assumptions used on the site's cups-to-grams pages. It is designed to answer the most common kitchen question quickly: how many grams are in one-quarter cup, one-half cup, three-quarters cup, or one full cup of a specific ingredient?

Common Cups to Grams Reference

Ingredient1/4 Cup1/3 Cup1/2 Cup3/4 Cup1 Cup
All-purpose flour31.3 g41.8 g62.7 g94.0 g125.4 g
Sugar50.3 g67.0 g100.6 g150.8 g201.1 g
Butter56.7 g75.6 g113.5 g170.2 g226.9 g
Brown sugar, packed55.0 g73.3 g110.0 g165.0 g220.0 g
Oats20.7 g27.6 g41.4 g62.1 g82.8 g
Cocoa powder24.8 g33.1 g49.7 g74.5 g99.4 g
Powdered sugar29.6 g39.4 g59.1 g88.7 g118.3 g

How to Use a Cups to Grams Chart Without Confusion

First, choose the ingredient row. Then choose the exact cup fraction you need. This order matters because the whole point of the chart is that ingredient density changes the final gram value. Reading the chart in the opposite direction often leads people to borrow the wrong row and apply it to a different ingredient.

This page is especially helpful when you want to rewrite a cup-based recipe into weight-based notes before you start. Many cooks do that so they can move faster during mixing, reduce guesswork between batches, and avoid repeated scooping. The chart gives a fast reference, while a scale helps confirm the final quantity when accuracy matters most.

Where This Chart Is Most Useful

  • Rewriting cup-based recipes into gram-based prep notes.
  • Checking quarter-cup and half-cup amounts for common baking ingredients.
  • Comparing how dense ingredients differ before scaling a recipe.
  • Planning dry ingredient prep before using a scale.
  • Double-checking values in older recipe books that only list cups.

Cups to Grams Chart FAQs

Why does half a cup of butter weigh more than half a cup of oats?

Butter is denser than oats, so the same volume holds more mass.

Can I use one cups to grams chart for every flour type?

No. Even among flours, weight per cup can change depending on the flour type and how it was measured.

Is this chart enough for very precise baking?

It is a strong reference, but direct scale measurement is still the best choice when the recipe is highly ratio-sensitive.

Why is one-third cup worth listing separately?

Many recipes use one-third cup, and converting it mentally is less convenient than quarter-cup or half-cup values.