300 Grams of Flour to Cups

300 grams of all-purpose flour is 2.5 US cups, based on 120 grams per cup. The result assumes flour that is fluffed, spooned into the cup and leveled.

The decimal is about 2 1/2 cup and approximately 40 US tablespoons. Weighing 300 grams is still the most repeatable method.

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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.

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Grams

US Cups

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

300 Grams of Flour to Cups by Type

Flour type changes the volume. The table uses published King Arthur Baking reference weights and keeps the all-purpose answer first.

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Flour type	Grams in 1 cup	300 grams in cups	Measurement state
All-purpose flour	120 g	2.5 cups	fluffed, spooned and leveled
Bread flour	120 g	2.5 cups	King Arthur bread flour reference
Pizza flour	116 g	2.59 cups	00 pizza flour reference
Pastry flour	106 g	2.83 cups	lightly filled
Spelt flour	99 g	3.03 cups	lightly filled
Almond flour	96 g	3.12 cups	not almond meal

A clean two-and-a-half-cup conversion

Three hundred grams of all-purpose flour equals 2.5 US cups with the 120 gram reference. Measure two level cups and one level half cup. Do not scoop from the bag, because three compact scoops can add a substantial amount.

For all-purpose flour, the calculation is 300 ÷ 120 = 2.5 cups. If you use cups, fill each measure the same way from start to finish.

Do not change to a lighter flour type just to reach a simpler cup fraction. Select the flour named in the recipe because protein level and behavior matter as much as volume.

How to Measure This Amount

Fluff the flour. Stir it gently to loosen compacted areas.
Spoon it into the cup. Do not use the cup as a scoop.
Level without tapping. Sweep a straight edge across the top.
Keep the remainder accurate. Use a smaller measure or weigh the full 300 grams.

300 g ÷ 120 g per cup = 2.5 cups

Why 300 grams converts cleanly

Three hundred grams of all-purpose flour is exactly 2.5 US cups under the 120 gram standard. The conversion can be assembled with two full cups and one half cup, making it easier to reproduce than many decimal results.

This quantity works well for a medium cookie batch, loaf cake or small bread dough. Flour collected on the counter, spoon or cup rim is part of the intended 300 grams, so keep the work area tidy when precision matters.

A clean fraction still assumes light filling. Three scooped measures can contain more than 300 grams even if their marked volumes add up to 2.5 cups. Use the volume result only with the documented technique.

Method and source

How this conversion was checked

This page uses 120 grams per US cup for unsifted, fluffed, spooned and leveled. Do not pack flour into the cup.

Primary reference: King Arthur Baking Ingredient Weight Chart

Cup standard: NIST US customary cup reference

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300 Grams of Flour FAQ

How many cups is 300 grams of flour?

300 grams of all-purpose flour is 2.5 US cups using 120 grams per cup and the fluff, spoon and level method.

Is 300g flour exactly about 2 1/2 cup?

The calculated decimal is 2.5 cups. About 2 1/2 cup is a practical measuring reference, but the original 300 gram weight is more precise.

Does bread flour use the same conversion?

This page uses 120 grams per cup for both King Arthur all-purpose flour and its bread flour reference. Other brands or recipe publishers may set a different house standard.

Should flour be scooped from the bag?

No. Fluff the flour, spoon it into the dry cup and level the top. Scooping directly can compress extra flour into the cup.

Other Flour Amounts

Use the same 120 gram all-purpose flour standard across nearby pages.

Editorial review

Reviewed for clarity and consistency

Written and reviewed by William Leo. Ingredient values are checked against the methodology and sources listed on this page.

Last reviewed
August 23, 2026