Convert Plain Flour from Ounces to Cup

How many cups is 1 ounce of plain flour?

1 ounce of plain flour (All-Purpose Flour) is 0.2 cups. 2 ounces of plain flour is 0.4 cups. 4 ounces of plain flour is 0.81 cups. 6 ounces of plain flour is 1.21 cups. Use the converter below for any amount.

  • These figures use the metric cup (250 ml). A US cup is slightly smaller at 240 ml, so it holds a little less. Use the US cup converter →
  • Cup sizes are not standard worldwide, so the same cup of an ingredient can weigh more or less depending on the country. What is a cup measurement →
  • Flour settles, so a cup's weight depends on how it is filled. This page uses 140 g for a metric cup spooned and levelled. Sifted it can drop to about 125 g; scooped and packed it can reach 160 g. Weigh for the most reliable result.

Plain flour (also known as all-purpose flour) is one of the most commonly used ingredients in baking and cooking. It has a moderate protein content, making it versatile enough for pastries, breads, sauces, and coatings. In the UK, Australia, and New Zealand, it’s called plain flour, while in the US and Canada, it’s known as all-purpose flour.

Since different countries use different measurement systems (and flour can settle when scooped), converting between grams, cups, and tablespoons helps ensure your recipes turn out just right. Use this page to easily convert plain flour for any recipe.

Also known as

  • All-Purpose Flour

Plain Flour Calculator

Don't have self-raising flour? Use our calculator to make it from scratch.

Self Raising Flour Calculator

Cake flour is softer and lower in protein than plain flour (around 7 to 9% vs 10 to 12%), giving a more tender crumb. It is lighter per cup (130 g vs 140 g); for a quick stand-in when out of cake flour, sift 1 cup of plain flour with 2 tablespoons removed and replaced with cornstarch. See our Cake Flour converter.

Bread flour carries more protein than plain flour (around 12 to 14% vs 10 to 12%), giving stronger gluten and a chewier crumb in yeasted bakes. It is slightly heavier per cup (150 g vs 140 g); swap by weight in pizza, sandwich loaves, and bagels for a more open, chewy texture. See our Bread Flour converter.

Self-raising flour is plain flour with baking powder already blended in, matched in weight per cup (140 g each). Use the self-raising flour calculator to make your own from plain flour, or swap to plain flour and add your own leavener. See our Self Raising Flour converter.

Out of plain flour? See plain flour substitutes →

No scale? The tool below gives a good estimate, but for exact bakes a digital kitchen scale removes the guesswork.

Plain Flour Measurement Converter

Enter a value and pick your units.

Result

0 Cup

Common Plain Flour Conversions

Here are the most common plain flour conversions from ounces to cups.

OuncesCups
1 oz0.2 cups
2 oz0.4 cups
3 oz0.61 cups
4 oz0.81 cups
5 oz1.01 cups
6 oz1.21 cups
8 oz1.62 cups
10 oz2.02 cups
12 oz2.43 cups

Plain Flour Conversion Chart

The conversion chart below gives a quick reference for converting plain flour from Ounces to Cup and other measurements.

ouncescupgramscup(US)tbsptsp
2.5 oz0.51 cup70.87 g0.53 cup (US)8.44 tbsp25.31 tsp
5 oz1.01 cup141.75 g1.05 cup (US)16.87 tbsp50.62 tsp
7.5 oz1.52 cup212.62 g1.58 cup (US)25.31 tbsp75.94 tsp
10 oz2.02 cup283.5 g2.11 cup (US)33.75 tbsp101.25 tsp

Frequently Asked Questions

How many cups is 1 ounce of plain flour?
1 ounce of plain flour is 0.2 cups. The conversion is fixed, so 2 ounces is 0.4 cups and 4 ounces is 0.81 cups. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones. Open the plain flour converter
How many cups is 2 ounces of plain flour?
2 ounces of plain flour is 0.4 cups. The conversion is fixed, so 1 ounce is 0.2 cups and 4 ounces is 0.81 cups. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
What is 4 oz plain flour in cups?
4 ounces of plain flour is 0.81 cups. The conversion is fixed, so 1 ounce is 0.2 cups and 2 ounces is 0.4 cups. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
What is 6 oz plain flour in cups?
6 ounces of plain flour is 1.21 cups. The conversion is fixed, so 1 ounce is 0.2 cups and 2 ounces is 0.4 cups. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
How many cups is 1 ounce of All-Purpose Flour?
All-Purpose Flour is another name for plain flour, so 1 ounce of All-Purpose Flour is 0.2 cups, exactly the same as plain flour. The figure does not change with the name: 2 ounces is 0.4 cups and 0.5 ounces is 0.1 cups. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
Are plain flour and All-Purpose Flour the same thing?
Yes. All-Purpose Flour is another name for plain flour, so they are the same ingredient and convert identically. 1 ounce of plain flour is 0.2 cups under either name, and 2 ounces is 0.4 cups. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.
Why does a cup of flour vary in weight?
Flour compresses easily, so how you fill the cup changes the weight. Spooned lightly and levelled, a metric cup of plain flour is about 140 grams. Sifted first it can fall to around 125 grams, while scooping straight from the bag and packing it down can push it to 160 grams. For consistent baking, weigh flour on a scale rather than measuring by cup.

Other Ingredients

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