Self-Raising Flour — Cups to Grams
1 cup of self-raising flour = 125 grams
1 cup of self-raising flour weighs approximately 125 grams. Use the converter below for custom amounts, or check the full conversion table.
Self-Raising Flour Converter
Result
125 g
Why Does Self-Raising Flour Weigh 125g Per Cup?
Self-raising flour has the same density as plain flour — about half that of water. The added baking powder and salt are in such small quantities (about 1.5 teaspoons per cup) that they don't significantly affect the weight. Like all flour, it compacts when scooped, so the spoon-and-level method is essential for consistent results.
A cup of self-raising flour (125g) weighs the same as a cup of plain flour. The leavening agents are so finely distributed that you can't see or feel the difference. The only way to tell them apart is by label or by testing with hot water (self-raising will bubble).
When Does Precision Matter for Self-Raising Flour?
Self-raising flour precision matters most in scones and quick breads, where the leavening ratio affects rise and texture. Too much flour makes dense, heavy results; too little makes flat, spread-out bakes. In pancakes and simple cakes, being off by 10-15% usually produces acceptable results. The bigger concern is flour freshness — old self-raising flour loses its leavening power, so even precise measurements won't help if your flour is past its prime.
How to Measure Self-Raising Flour Correctly
Self-raising flour should be measured using the same spoon-and-level method as plain flour: use a spoon to lightly fill your measuring cup, then level it off with a straight edge. Never scoop it directly from the bag. For precision baking, always use a digital kitchen scale. For best results, use a digital kitchen scale for precision baking.
Understanding Self-Raising Flour Measurements
Self-raising flour is plain flour with baking powder and salt already mixed in. One cup of self-raising flour weighs approximately 125 grams, the same as plain flour. The baking powder is typically added at a ratio of 1-2 teaspoons per cup of flour, depending on the brand. Learn more about how to measure flour correctly.
Common Uses in Baking & Cooking
Self-raising flour is used in quick breads, scones, pancakes, and some cakes. It's convenient because you don't need to add separate leavening agents. However, it's not suitable for yeast breads or recipes that call for specific amounts of baking powder or bicarbonate of soda. If you need a substitute, see our Self-Raising Flour substitution guide.
Storage and Handling Tips
Store self-raising flour in an airtight container in a cool, dry place. It can be kept at room temperature for up to a year, but the baking powder will lose potency over time. If your self-raising flour is old, test it by mixing a teaspoon with hot water — it should bubble. If not, replace it.
Need to convert self-raising flour to other units? Try our cups to grams converter or tablespoons to grams converter.
Related Guides
How to Measure Flour Correctly | Spoon & Level Method
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Self-Raising Flour Conversion Table
| Amount | Grams | Ounces |
|---|---|---|
| 1 teaspoon | 2.6g | 0.09 oz |
| 1 tablespoon | 7.81g | 0.28 oz |
| ¼ cup | 31.3g | 1.1 oz |
| ⅓ cup | 41.7g | 1.47 oz |
| ½ cup | 62.5g | 2.2 oz |
| ⅔ cup | 83.3g | 2.94 oz |
| ¾ cup | 93.8g | 3.31 oz |
| 1 cup | 125g | 4.41 oz |
| 1½ cups | 188g | 6.61 oz |
| 2 cups | 250g | 8.82 oz |
Self-Raising Flour — US, Metric & UK Cup Conversions
Cup sizes vary by country. This table shows how much self-raising flour weighs when measured with US cups (most online recipes), metric cups (Australia, NZ, Canada), or UK/Imperial cups.
| Amount | US Cup(236.6 ml) | Metric Cup(250 ml) | UK Cup(284 ml) |
|---|---|---|---|
| ¼ cup | 31.3g | 33g | 37.5g |
| ⅓ cup | 41.7g | 44g | 50g |
| ½ cup | 62.5g | 66g | 75.1g |
| ⅔ cup | 83.3g | 88.1g | 100g |
| ¾ cup | 93.8g | 99.1g | 113g |
| 1 cup | 125g | 132g | 150g |
| 1½ cups | 188g | 198g | 225g |
| 2 cups | 250g | 264g | 300g |
Note: US cups (236.6 ml) are standard in most online recipes. Metric cups (250 ml, used in Australia, NZ, Canada) hold 5.7% more. UK/Imperial cups (284 ml) hold 20% more than US cups.
Measurement Note
Spooned into the cup and levelled, not scooped or packed.
Need a Substitute?
Out of self-raising flour? We've got 1 tested alternative with exact ratios.
Frequently Asked Questions
How do I make self-raising flour from plain flour?▼
Can I use self-raising flour for bread?▼
Why didn't my self-raising flour rise?▼
How many grams in 1 cup of self-raising flour?▼
Can I substitute self-raising flour for plain flour?▼
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Values are approximate and can vary depending on how the ingredient is measured. For precision baking, we recommend using a digital kitchen scale.