To convert ounces of self-rising flour into cups, multiply by 0.22679619: one ounce comes to 0.22679619 cups. Every ingredient has its own figure here, because the units are measuring different things and only the density links them.
Put next to water — 1 g per mL exactly — self-rising flour measures 0.52834 g per mL. That ratio, 52.83%, is what separates this page from every other ingredient in the same units, and it is measured rather than defined.
A cup of self-rising flour is 125 g when it is measured the standard way, but how it gets into the cup changes the answer: between about 112.5 g and 150 g covers the range from lightly spooned to firmly packed. That 20% spread is larger than most of the adjustments recipes fuss over, and it disappears entirely the moment the ingredient is weighed instead.
One cup of self-rising flour is 4.409 oz. US kitchen scales usually step in eighths of an ounce, which is 3.54 g — around 2.83% of a cup of this ingredient, so the scale is precise enough for a full cup and coarse for a spoonful. That is why recipes mix the two systems: ounces for the bulk, spoons for the small amounts.
How the figure is arrived at: The same weight per cup as all-purpose, because that is what it is — with baking powder and salt already blended through it.
The formula
ounces- The amount of self-rising flour you are converting, in ounces
0.226796185- Cups per ounce for self-rising flour, from its density of 0.52834 g/mL
cups- The equivalent quantity in cups
How it works, step by step
- Enter the quantity in ounces.
- It is multiplied by 0.226796185, the cups-per-ounce figure for self-rising flour.
- The result appears in cups, with a second reading in tbsp beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
2 oz of self-rising flour in cups
2 oz of self-rising flour weighs out at 0.453592 cups. Divide 0.453592 by 0.22679619 and you get back to 2 oz, which is the quickest check that the factor is the right way up.
4 oz of self-rising flour in cups
4 oz of self-rising flour weighs out at 0.907185 cups. Divide 0.907185 by 0.22679619 and you get back to 4 oz, which is the quickest check that the factor is the right way up.
12 oz of self-rising flour in cups
12 oz of self-rising flour weighs out at 2.72155 cups. Divide 2.72155 by 0.22679619 and you get back to 12 oz, which is the quickest check that the factor is the right way up.
How to read your score
Frequently asked questions
How many cups are in 1 oz of self-rising flour?
One ounce of self-rising flour is 0.22679619 cups. Half that quantity is 0.113398 cups and double it is 0.453592 cups, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of self-rising flour not 236 g like water?
Because weight per cup depends on what is in the cup. Self-rising flour has a density of 0.52834 g per mL where water has 1.00, so a cup of it weighs 125 g rather than 236.6 g. That is a difference of 111.6 g per cup, and it is the reason a single volume-to-weight factor cannot be applied to every ingredient.
Does how I measure it change the weight?
Yes, and by more than most people expect. Handling changes the weight of a cup of self-rising flour by roughly 20% — about 12.5 g either side of 125 g — because the same weight per cup as all-purpose, because that is what it is — with baking powder and salt already blended through it. Weighing removes the question entirely.
Is a fluid ounce of self-rising flour the same as an ounce?
No. A fluid ounce is a volume — one eighth of a US cup, 29.57 mL — and an ounce is a weight. One fluid ounce of self-rising flour weighs 0.5512 oz, so the two readings differ by 44.9%. They coincide only for something with the density of water, and then only roughly.
Is this a US cup or a metric cup?
US customary: 236.59 mL, which is the cup every US recipe means. A metric cup is 250 mL, so the same cup of self-rising flour would weigh 132.09 g instead of 125 g — 7.09 g more, or 5.67%. Australian and some European recipes use the metric cup, and the difference is large enough to matter in baking.
Do I need a scale for this, or will measuring cups do?
A scale, if the result matters. Volume measuring carries a spread of about 20% for self-rising flour — roughly 25 g on a 125 g cup — while a domestic scale is accurate to a gram or two. For anything where the ratio of ingredients drives the outcome, bread and pastry above all, weigh it.
How much does 2 cup of self-rising flour weigh?
2 cup of self-rising flour comes to 250 g, or 8.8185 ounces. This page runs that calculation in reverse — enter a weight and it returns the volume — and the cups-to-ounces page does it in the direction the question is usually asked.
Self-rising flour in ounces and cups
| Ounces | Cups | Unrounded |
|---|---|---|
| 1/2 oz | 0.113398 cup | 0.1133980925 |
| 1 oz | 0.226796 cup | 0.226796185 |
| 2 oz | 0.453592 cup | 0.45359237 |
| 3 oz | 0.680389 cup | 0.680388555 |
| 4 oz | 0.907185 cup | 0.90718474 |
| 6 oz | 1.36078 cup | 1.36077711 |
| 8 oz | 1.81437 cup | 1.81436948 |
| 12 oz | 2.72155 cup | 2.72155422 |
| 16 oz | 3.62874 cup | 3.62873896 |
Based on 125 g per cup of self-rising flour. One ounce of self-rising flour is 0.22679619 cups.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 125 g | 4.41 oz | 236.6 mL |
| 3/4 cup | 93.75 g | 3.31 oz | 177.4 mL |
| 2/3 cup | 83.33 g | 2.94 oz | 157.7 mL |
| 1/2 cup | 62.5 g | 2.2 oz | 118.3 mL |
| 1/3 cup | 41.67 g | 1.47 oz | 78.86 mL |
| 1/4 cup | 31.25 g | 1.1 oz | 59.15 mL |
| 1 tbsp | 7.812 g | 0.276 oz | 14.79 mL |
| 1 tsp | 2.604 g | 0.0919 oz | 4.929 mL |
US customary measures: 1 cup = 236.59 mL, 1 tbsp = 14.79 mL, 1 tsp = 4.93 mL.
| Ingredient | Grams per cup | Ounces per cup | Density (g/mL) |
|---|---|---|---|
| Tapioca starch | 120 g | 4.233 oz | 0.5072 |
| Powdered sugar | 120 g | 4.233 oz | 0.5072 |
| All-purpose flour | 125 g | 4.409 oz | 0.5283 |
| Self-rising flour (this page) | 125 g | 4.409 oz | 0.5283 |
| Bread flour | 127 g | 4.48 oz | 0.5368 |
| Cornstarch | 128 g | 4.515 oz | 0.541 |
| Cornmeal | 138 g | 4.868 oz | 0.5833 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.