Self-Raising Flour Cups To Grams Converter
Convert cups of self-raising flour to grams for UK baking, with US, metric and imperial cup sizes, spoon-and-level options and reverse grams conversion.
Quick Cup Amounts
Use these buttons for common cake and scone amounts. They keep your selected cup size and measuring style.
Flour Conversion Result
264 g
2 metric cups of spoon-and-level self-raising flour converts to about 264 g after recipe scaling.
2.00 cups
9.3 oz
132 g
32 tbsp
Cakes, scones and traybakes
264 g to 2.00 cups
1x recipe
Quick Conversions
| Metric Cups | Spoon And Level | Scooped | Sifted |
|---|---|---|---|
| 1/4 cup | 33 g | 37 g | 31 g |
| 1/2 cup | 66 g | 74 g | 62 g |
| 1 cup | 132 g | 148 g | 125 g |
| 1 1/2 cups | 198 g | 222 g | 187 g |
| 2 cups | 264 g | 296 g | 249 g |
| 3 cups | 396 g | 444 g | 374 g |
Conversion Formula And Method
Selected cup grams = grams per US cup x selected cup millilitres / 236.588.
Grams = cups x selected cup grams x recipe scale.
Ounces = grams / 28.349523125.
Cups = grams / selected cup grams.
Tablespoons = cups x 16 for a US-cup tablespoon relationship.
The default spoon-and-level value uses 125 g per US cup, then adjusts for the cup size. A metric cup is larger than a US cup, so the same level cup converts to a higher gram amount. An imperial cup is larger again. If a UK recipe uses cups but does not say which cup, weigh the flour where possible or use the recipe source’s own conversion table.
Why Self-Raising Flour Cup Weights Differ
Flour is compressible. A cup dipped into a bag can pack flour into the measure, while spooning flour into the cup and levelling it is lighter. Sifted flour can be lighter again because it contains more air. Self-raising flour also contains raising agents and salt, but the biggest measuring difference is usually packing, not the raising agent.
For cakes and scones, a heavy cup can make the mixture dry, dense or slow to rise. A light cup can make batter too loose. That is why UK baking recipes often prefer grams. If the recipe is American, the US cup setting may fit better. If the recipe is from an Australian or New Zealand source, a metric cup is often the safer starting point.
Worked Baking Examples
Victoria Sponge
A recipe asking for 2 metric cups of self-raising flour converts to about 264 g with the spoon-and-level setting. If the baker scoops firmly from the bag, the same 2 cups can be closer to 296 g, enough to change texture.
Half Batch Scones
If a full recipe uses 3 metric cups, enter 3 cups and a scale of 0.5. The converter returns about 198 g for a half batch using the spoon-and-level method.
Reverse From Grams
If a bag recipe says 250 g and you only have cups, choose grams to cups. With a metric spoon-and-level cup, 250 g is about 1.89 cups. In practice, weigh if you can.
Using The Result In A Recipe
Use the gram result directly on a kitchen scale for the best repeatability. If using cups, fluff the flour, spoon it into the cup and level with a straight edge. Do not shake the cup to settle the flour unless the recipe specifically says so. For self-raising flour, check the date on the packet because old raising agent can weaken the rise even when the weight is correct.
If replacing plain flour with self-raising flour, remember that self-raising flour already contains raising agent. This converter only changes weight and volume; it does not adjust baking powder, bicarbonate of soda, salt, acidity or liquid. Recipe chemistry still needs a separate check.
Cup Size And Measuring Checks
If a recipe was written outside the UK, read the cup size before converting. A US cup is about 236.6 ml, a metric cup is 250 ml and an imperial cup is larger. The same scoop of self-raising flour can therefore change by several grams before the measuring style is even considered. That difference is not dramatic in a casual crumble topping, but it can matter in a sponge, muffin or scone recipe where the flour-to-liquid balance controls the crumb.
For repeat baking, write down the setting you used beside the recipe. For example, “metric cup, spoon and level, 132 g per cup” is far easier to repeat than “about two cups”. If the first bake is dry, reduce the flour slightly or check whether the original recipe expected a US cup. If the batter is loose, check whether the flour was sifted before measuring, whether the egg size changed, and whether any yoghurt, milk or fruit added extra moisture.
FAQ
How many grams are in 1 cup of self-raising flour?
One US cup is commonly about 125 g when spooned and levelled. One metric cup is about 132 g using the same density assumption.
Why does scooped flour weigh more?
Scooping can compact flour into the cup. More flour fits into the same volume, so the gram weight rises.
Are ounces in this converter fluid ounces?
No. Ounces are weight ounces. Fluid ounces measure volume and are not suitable for weighing flour.
Can I use this for plain flour?
The numbers are close for many plain flour uses, but use a plain flour converter if the recipe is sensitive or if the source gives a different gram-per-cup value.
What cup size do UK recipes use?
Many modern UK recipes use grams. If a UK source uses cups, check whether it means metric cups or gives its own conversion note.
Should I still weigh flour?
Yes, for the best baking result. Cups are useful for converting a recipe, but a scale is more repeatable.
Sources
- King Arthur Baking Company. (n.d.). Ingredient weight chart. King Arthur Baking. https://www.kingarthurbaking.com/learn/ingredient-weight-chart
- National Institute of Standards and Technology. (2008). Guide for the Use of the International System of Units (SI). NIST Special Publication 811. https://www.nist.gov/pml/special-publication-811
- National Institute of Standards and Technology. (2019). General tables of units of measurement. NIST Handbook 44, Appendix C. https://www.nist.gov/pml/owm/metric-si/si-units
- BBC Food. (n.d.). Self-raising flour recipes. BBC Food. https://www.bbc.co.uk/food/self-raising_flour