1/2 Cup Self-Rising Flour in Grams

1/2 cup of self-rising flour weighs 56.5 g (spooned and levelled, King Arthur Baking). A full cup weighs 113 g, so the half cup is exactly half of that. All-purpose flour with baking powder and salt already mixed in. All the figures on this page are approximate conversions based on the King Arthur Baking value, so when a recipe really matters, verify with a kitchen scale.

Why weighing self-rising flour beats measuring it in cups

Half a cup of self-rising flour weighs 56.5 g, slightly lighter than a half cup of all-purpose flour at 60 g, because it is all-purpose flour with baking powder and salt already mixed in, and the raising agents change the density a little. The convenience is the point: self-rising flour lets you make scones, pancakes and quick breads without measuring baking powder and salt separately, and half a cup is the amount in a small batch of scones, a few pancakes, or a single-serving quick bread. The raising agents are the catch: they lose their strength over time, so self-rising flour should be used within 6 months, and a bag that has been open for a year will not raise properly no matter how carefully you measure it.

The other catch is that self-rising flour already contains salt, so a recipe that calls for self-rising flour and also adds salt will be over-salted. If a recipe was written for plain flour and you use self-rising flour, leave out the baking powder and the salt, and expect the bake to rise a little more than intended. If a recipe was written for self-rising flour and you use plain flour, add about 1 teaspoon of baking powder and a pinch of salt per cup of flour, which is about half a teaspoon of baking powder and a small pinch of salt per half cup. Weighing the flour keeps the raising agents in proportion, because the baking powder is mixed through the flour and the ratio depends on the weight.

Self-Rising Flour cups to grams conversion table

Cups Grams Tablespoons
1/8 cup 14.1 g 2
1/4 cup 28.2 g 4
1/3 cup 37.7 g 5.3
1/2 cup 56.5 g 8
2/3 cup 75.3 g 10.7
3/4 cup 84.8 g 12
1 cup 113 g 16
1 1/2 cups 169.5 g 24
2 cups 226 g 32
3 cups 339 g 48

The table is built around the half cup, which is the measure this page is about, with the full-cup weight of 113 g as the anchor. Every row is the full-cup weight multiplied by the fraction, so the numbers stay consistent as you scale up or down. One tablespoon of self-rising flour weighs about 7.1 g, which is useful when a recipe calls for a spoonful rather than a cup.

Worked examples

Scones for a morning tea, a batch of 6

A batch of 6 scones uses about 1/2 cup of self-rising flour, which is 56.5 g, mixed with butter, milk and a little sugar. Weigh 56.5 g rather than measuring by cups, because the flour is light and a scooped half cup can be heavy. Do not add baking powder or salt, because they are already in the flour, and handle the dough as little as possible so the scones rise well.

Pancakes for two

Pancakes for two people use about 1/2 cup of self-rising flour, which is 56.5 g, mixed with an egg, milk and a little sugar. Weigh the flour so the pancakes are light and fluffy: the baking powder in the flour does the rising, and the amount needs to be right. Cook the pancakes on a medium heat until bubbles appear, then flip and cook the other side.

A quick soda bread for two

A small soda bread uses about 1/2 cup of self-rising flour, which is 56.5 g, mixed with buttermilk and a pinch of salt. Weigh 56.5 g so the bread is tender rather than dense: self-rising flour already contains raising agents, so the bread needs no yeast and no extra baking powder. Shape the dough quickly, cut a cross on top, and bake in a hot oven.

How the weight was measured

How you fill the cup decides what the cup weighs. The method used here is spooned and levelled: the ingredient is spooned into the cup and levelled with a straight edge, never scooped and never tapped down. If you scoop, you compress the ingredient and the same cup can weigh noticeably more, which is the single most common reason a recipe that worked for its author fails in another kitchen.

The value is taken from King Arthur Baking with high confidence. King Arthur Baking is the reference used across this site because its chart is consistent and widely used by recipe developers. No other source was mixed in, and nothing on this page was estimated from a different ingredient. Remember that every conversion on this page is approximate: check the weight on a kitchen scale whenever accuracy matters, and use the table as a guide rather than a guarantee.

Practical guidance

Store self-rising flour in an airtight container in a cool, dry place, and use it within 6 months so the raising agents stay active. Check the date on the bag: old self-rising flour will not raise properly, and no amount of careful measuring will fix it. Do not add baking powder or salt to a recipe that calls for self-rising flour, because they are already mixed in. If you use plain flour instead, add about half a teaspoon of baking powder and a small pinch of salt per half cup. Always spoon the flour into the cup and level it, never scoop. If you do not have a scale, spoon the flour loosely into the half cup and level it, remembering that the 56.5 g figure is approximate.

Common mistakes with half-cup measures

The most common mistake is treating a half cup as a casual measure. Half a cup of flour is 60 g, and a scooped half cup can easily weigh 70 g or more, which is a 15 percent error in a recipe that may only contain two or three cups of flour in total. Small measures carry the largest relative errors, so weighing matters more, not less, at this size. The second mistake is using a liquid measuring jug for dry flour: the meniscus line is designed for liquids, and flour measured in a jug is almost always over- or under-filled. Use a dry cup, or a scale. The third is assuming every flour weighs the same per half cup: the flours on this page range from about 42 g to about 82 g per half cup, so swapping flours cup for cup without adjusting the weight changes the recipe. Finally, do not pack flour into the half cup to make it look full: spoon and level, every time.

Frequently asked questions

How many grams is 1/2 cup of self-rising flour?

1/2 cup of self-rising flour weighs 56.5 g when spooned and levelled, according to King Arthur Baking, which lists 113 g per cup. The figure is approximate, because flour settling varies, so verify with a kitchen scale when it matters.

What is in self-rising flour?

All-purpose flour with baking powder and salt already mixed in. The raising agents do the work of baking powder, so a recipe that calls for self-rising flour does not need extra baking powder or salt.

Can I use plain flour instead of self-rising flour?

Yes. Add about half a teaspoon of baking powder and a small pinch of salt per half cup of plain flour, which is about 1 teaspoon of baking powder and a pinch of salt per cup. Weigh the flour rather than measuring by volume so the ratio stays right.

How long does self-rising flour keep?

Use it within 6 months, because the baking powder loses its strength over time. An old bag will not raise properly, so check the date and test the flour if you are unsure: a spoonful in hot water should fizz.

Why are my scones flat?

Often because the self-rising flour is old and the baking powder has lost its strength, or because the dough was over-handled. Use fresh flour within 6 months, weigh 56.5 g per half cup, and handle the dough as little as possible.

Related conversions

If you need a different amount, the table above scales in both directions, and the converter tool will do the maths for any quantity. When a recipe really matters, weigh the ingredient on a kitchen scale rather than trusting the cup alone, because the figures on this page are approximate and natural ingredients vary by brand, variety and moisture.