300 Grams to Cups

300 grams is 2.5 cups of all-purpose flour, 1.52 cups of granulated sugar or 1.32 cups of butter. The correct cup result depends on the ingredient because grams measure weight and cups measure volume.

Choose an ingredient in the converter or use the complete chart below. All results use US customary cups and a clearly named ingredient state.

Convert 300 GramsView Full Chart

Grams to Cups Converter

Choose the ingredient before converting because every ingredient has a different weight per cup.

Grams to Cups Converter

Results use the documented ingredient state and one US customary cup.

Rounded to two decimal places for cups and the nearest gram for reverse conversions.

300 Grams = Two and a Half Cups of Flour

300 grams of all-purpose flour is a tidy two and a half cups, making it a favourite round number in scaled recipes. The same weight is about one and a half cups of sugar and roughly one and a third cups of butter.

How Many Cups Is 300 Grams?

300 grams is 2.5 cups of flour, 1.52 cups of sugar, or 1.32 cups of butter — flour again falling on a tidy half-cup mark.

Here is the direct ingredient-by-ingredient answer. The second column shows the source weight for one US cup, so the calculation remains transparent.

300 grams of Grams in 1 US cup Equivalent in cups
All-Purpose Flour 120 g 2.5 cups
Granulated Sugar 198 g 1.52 cups
Butter 227 g 1.32 cups
Brown Sugar 213 g 1.41 cups
Powdered Sugar 113 g 2.65 cups
Unsweetened Cocoa Powder 84 g 3.57 cups
Old-Fashioned Rolled Oats 89 g 3.37 cups
Honey 340 g 0.88 cups
Fresh Milk 244 g 1.23 cups
Vegetable Oil 198 g 1.52 cups
Long-Grain White Rice 185 g 1.62 cups
Water 237 g 1.27 cups
Chocolate Chips 170 g 1.76 cups
Whole Almonds 142 g 2.11 cups
Table Salt 288 g 1.04 cups
Baking Powder 192 g 1.56 cups
Cornstarch 113 g 2.65 cups
Peanut Butter 256 g 1.17 cups
Maple Syrup 312 g 0.96 cups
Cream Cheese 227 g 1.32 cups
Yogurt 227 g 1.32 cups
Raisins 149 g 2.01 cups

Results are rounded to two decimal places. Ingredient brands, moisture and measuring technique can cause small real-world differences.

A clean flour conversion with different sugar volume

Three hundred grams is exactly 2.5 cups of all-purpose flour using the 120 gram cup standard. It is about 1.52 cups of granulated sugar and 1.32 cups of butter, which shows why one weight cannot have a universal cup answer.

For flour, use two level cups and one level half cup only when a scale is unavailable. Spoon and level every cup to avoid compounding a packing error across several measures.

A 300 gram quantity is common in bread dough, larger cakes and family-size bakes. The converter can also calculate cocoa, oats, honey and other ingredients from the same weight.

Calculation and practical measures

Use this formula for any ingredient:

Cups = grams ÷ grams per cup

For all-purpose flour: 300 ÷ 120 = 2.5 cups, about 2 1/2 cup.

For granulated sugar: 300 ÷ 198 = 1.52 cups. For butter: 300 ÷ 227 = 1.32 cups.

Cocoa powder is lighter, so 300 grams occupies 3.57 cups. Rolled oats occupy 3.37 cups. These examples show why ingredient selection is required.

300 Grams of Flour, Sugar and Butter

The three most common kitchen answers, calculated from the same documented dataset.

All-Purpose Flour

2.5 cups

Uses 120 grams per cup. Fluff, spoon and level.

Open flour guide

Granulated Sugar

1.52 cups

Uses 198 grams per cup. Level without packing.

Open sugar guide

Method and source

How this conversion was checked

Each result uses the grams-per-cup value for the selected ingredient. Results are rounded for practical kitchen use.

Primary reference: King Arthur Baking Ingredient Weight Chart

Cup standard: NIST US customary cup reference

Download Sources PDF

View the ingredient dataset

300 Grams to Cups FAQ

How many cups is 300 grams?
The ingredient must be known. 300 grams is 2.5 cups of all-purpose flour, 1.52 cups of granulated sugar or 1.32 cups of butter using the standards documented on this page.
How much is 300 grams of flour in cups?
300 grams of all-purpose flour is 2.5 US cups, based on 120 grams per cup and the fluff, spoon and level method.
How much is 300 grams of sugar in cups?
300 grams of white granulated sugar is 1.52 US cups using 198 grams per cup.
Why do different websites give different answers?
Cup weights change with the ingredient, its form and the measuring method. Check whether the source uses a US customary cup, a 250 milliliter metric cup, packed ingredients or a different recipe-house standard.
Should I use the gram amount or the cup result?
Use the original gram amount when you have a kitchen scale. The cup conversion is most helpful when you only have US volume measures.
How many cups is 300 grams of all-purpose flour?
Using 120 grams per US cup, 300 grams of all-purpose flour is 2.5 cups. Spoon and level the flour if a kitchen scale is unavailable.

Nearby Gram Amounts

Choose another page without changing the ingredient standard.

125 grams150 grams180 grams200 grams240 grams250 grams350 grams400 gramsCups to grams

Written & reviewed by

William Leo Founder & Editor, GramstoCup.co

William is a hands-on home baker who founded GramstoCup.co to take the guesswork out of kitchen conversions. He built and maintains the site's ingredient-density dataset, cross-checking every value against published authorities — King Arthur Baking, USDA FoodData Central, NIST and Rose Levy Beranbaum's The Cake Bible — instead of copying figures from other converters, and rebuilds the tables whenever a source updates.

✓ Reviewed for accuracy · Last reviewed September 20, 2026 · Methodology · About the author