1 Cup Self-Rising Flour in Grams
1 cup of self-rising flour weighs 113 g (spooned and levelled, King Arthur Baking). 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.
Self-rising flour is all-purpose flour with the leavening already mixed in: baking powder and salt, blended at the mill so that every cup rises evenly. It is the flour of Southern American biscuits, quick soda breads and simple sponge cakes, and its great advantage is convenience. Its great trap is the same thing: because the raising agents are already there, any recipe that adds its own baking powder or salt will over-rise and taste bitter or salty. A cup weighs 113 g, and the raising agents inside it have a shelf life, so an old bag of self-rising flour is the most common reason a batch of biscuits comes out flat.
Cups lie: why self-rising flour should be weighed
Flour is the ingredient where cup measurements fail most often, and the reason is packing. The same cup of flour can weigh anywhere from 120 g to 142 g depending on whether you scoop it straight from the bag or spoon it in lightly, and that 20 g swing is the difference between a tender cake and a dry one. In bread the error is more forgiving, because dough can be adjusted by feel, but in cakes, pastry and cookies there is no second chance once the batter is mixed. Weighing flour is the single highest-value habit a home baker can adopt, and it costs nothing more than a basic kitchen scale. It also makes recipes repeatable: the same numbers give the same loaf, the same crumb and the same rise every time you bake it.
Worked examples
Southern biscuits that need 2 cups
A batch of Southern biscuits asks for 2 cups of self-rising flour, which is 226 g, plus cold butter and buttermilk and nothing else. There is no baking powder to add and no salt to add, because both are already in the flour. If you added them anyway, the biscuits would rise fast, then collapse, and taste metallic. Weigh 226 g, cut in the butter, stir in the buttermilk, and bake hot and fast.
A quick soda bread
A simple soda bread made with self-rising flour needs 3 cups, which is 339 g, plus buttermilk to bring it together. The acid in the buttermilk reacts with the raising agents in the flour, so the loaf goes into the oven within minutes of mixing. If the dough sits around, the reaction spends itself and the bread bakes flat, so weigh the flour first, have the oven hot, and work quickly once the liquid is in.
Pancakes on a slow morning
Pancakes are one of the best uses for self-rising flour, because the batter needs no extra leavening at all. A batch that calls for 1 1/2 cups needs 169.5 g, whisked with an egg and milk until just combined. Lumps are fine and over-mixing is the enemy, because it develops gluten and makes the pancakes tough. Let the batter rest for five minutes, then cook on a medium-hot griddle until bubbles break on the surface.
Self-Rising Flour cups to grams conversion table
| Cups | Grams | Tablespoons |
|---|---|---|
| 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 |
| 4 cups | 452 g | 64 |
One tablespoon of self-rising flour weighs about 7.1 g, and a cup is 16 tablespoons, so the tablespoon column is simply the cup weight divided by 16. For small amounts, a scale that reads to the gram is far more reliable than a spoon, because a heaped tablespoon can weigh half as much again as a level one. All the values in this table are approximate, and they assume the ingredient is measured spooned and levelled, exactly as the source measured it.
How the weight was measured
spooned and levelled means filling the cup with a spoon rather than plunging the cup into the bag or jar, then sweeping a straight knife across the top to level it off. Never scoop, and never tap the cup down, because both pack the ingredient and add weight. The difference between a spooned cup and a scooped cup can be 15 to 25 percent, which is enough to change a bake from tender to tough, so the method matters as much as the number. The source for the figure on this page is King Arthur Baking, and the confidence in the value is high. King Arthur Baking publishes a standard ingredient weight chart that recipe developers use as a reference, and this page follows that chart rather than any single cookbook. Where the chart gives a range or a note, we say so plainly instead of hiding the uncertainty. All the figures here are approximate conversions: natural ingredients vary by brand, variety, moisture and how finely they are chopped or ground, so when a recipe really matters, verify the weight with a kitchen scale.
When this conversion matters most
This conversion matters most in baking, where flour provides the structure of the finished product. Cakes, pastry, cookies and enriched breads all depend on the ratio of flour to liquid, fat and sugar, and a 10 percent error in flour throws that ratio off. It matters less in recipes where flour is a thickener or a coating, such as a roux or a dusting for fried food, because small differences disappear into the cooking. It matters again when you scale a recipe up or down: doubling a scooped cup doubles the error, while doubling a weighed amount stays exact. If you bake the same recipe more than once, weighing is what makes the second batch taste like the first.
Common mistakes
The most common mistake is scooping the cup directly through the bag. That packs the flour down and can add 20 g or more per cup, which is enough to turn a soft dough stiff or a moist cake dry. The second mistake is using a liquid measuring jug for flour. Jugs are read at eye level and cannot be levelled with a knife, so the amount is a guess dressed up as a measurement. The third is tapping or shaking the cup to settle the flour, which packs it further. And the fourth is forgetting that different flours weigh different amounts per cup: a cup of one flour is not interchangeable with a cup of another, even when the recipe says one cup of either. Always convert by weight for the flour you are actually using.
What to do if you do not have a scale
If you do not have a scale, spoon the flour into the cup until it is heaped, then sweep a straight knife across the top to level it off. Never scoop, never tap, and never press the flour down. That spooned-and-levelled method is exactly how the figure on this page was measured, so it is the closest you can get without weighing. It will still vary by a few grams from cup to cup, because flour settles and humidity changes its weight, but it is far closer than scooping. For recipes where flour is the main structure, such as sponge cakes and pastry, a scale that reads to the gram is worth buying before any other piece of baking equipment.
Storing self-rising flour
Airtight container, cool and dry; use within 6 months so the raising agents stay active. Keeping self-rising flour properly stored matters for the conversion as well as for the flavour: an ingredient that has absorbed moisture from the air weighs more per cup than a dry one, and one that has dried out weighs less. Store it in an airtight container, away from heat and light, and measure it in the state the recipe expects, not straight from a damp or stale bag.
Frequently asked questions
Can I use self-rising flour instead of all-purpose flour?
Only in recipes that do not add their own baking powder or salt. Self-rising flour already contains both, so using it in a recipe that adds more will over-leaven the bake and can leave a bitter, soapy taste. If you do swap it in, leave out the baking powder and salt the recipe calls for. For breads that rely on yeast, do not use self-rising flour at all, because the baking powder interferes with the slow yeast rise.
How long does self-rising flour keep?
The flour itself keeps for about a year in an airtight container, but the baking powder inside it loses strength after about six months. After that, biscuits and quick breads rise less and less. If your bag has been open for months and your bakes are coming out flat, the flour is the first suspect. Buy small bags, keep the container sealed, and write the opening date on the lid.
Can I use cups instead of a scale for self-rising flour?
Yes, but a scale is more accurate. If you measure self-rising flour spooned and levelled, exactly as the figure on this page was measured, a cup will be close to 113 g, within a few grams. The problem is that most people scoop rather than spoon, which can add 15 to 25 percent to the weight, and that error is enough to change a bake. For everyday cooking, cups are fine. For baking, where the ratio of ingredients decides the result, weigh it and check the number on the scale.
How many tablespoons are in a cup of self-rising flour?
There are 16 tablespoons in a US cup, so a cup of self-rising flour is 16 tablespoons, and one tablespoon weighs about 7.1 g. A teaspoon weighs about 2.4 g. Tablespoons are useful when a recipe calls for a small amount, but they carry the same packing problem as cups: a heaped tablespoon can weigh half as much again as a level one, so level every spoon with the back of a knife, and use a scale for small amounts when accuracy matters.
Does the weight change if I pack or sift self-rising flour?
Yes, and this is the single biggest source of error in cup measurements. self-rising flour is measured spooned and levelled, and a scooped cup can weigh 15 to 25 percent more than a spooned cup, because scooping packs the ingredient down. Sifting has the opposite effect: it adds air and makes the cup lighter. Always measure the way the figure on this page was measured, spooned and levelled, and the weight will match the table.