How to Substitute Plain Flour for Self-Rising Flour

To substitute plain flour for self-rising flour, add baking powder to the plain flour; add salt only if the recipe does not already include it. For each 1 cup (120 g) of self-rising flour, use 1 cup (120 g) plain flour and 1½ teaspoons (about 6 g) baking powder. This works for many cakes, biscuits, pancakes, and quick breads, though self-rising flour blends vary by country and brand.

What You’ll Need

Plain flour: Use all-purpose flour in the United States, or ordinary plain wheat flour elsewhere. Measure the amount the recipe calls for in self-rising flour.
Baking powder: Use 1½ teaspoons (about 6 g) for every 1 cup (120 g) plain flour. Choose baking powder, not baking soda, for this general substitution.
Fine salt, if needed: Add ¼ teaspoon (about 1.5 g) per cup of flour only when the recipe does not already contain salt. Self-rising flour often includes salt, but some self-raising flours do not.
Measuring tools: A set of measuring spoons, a cup measure or kitchen scale, and a whisk or sieve help distribute the raising agent evenly.

Step-by-Step

Check how the recipe uses its flour. Look through the ingredient list before measuring. Note whether it calls for any baking powder, baking soda, salt, or acidic ingredients such as buttermilk, yogurt, or lemon juice. The recipe may already account for some or all of the leavening and salt. If it gives a specific adjustment for plain flour, follow that instruction instead of adding the standard amount on top.
Work out the amount of plain flour. Replace the self-rising flour with the same volume or weight of plain flour. For example, if the recipe calls for 2 cups (240 g) self-rising flour, measure 2 cups (240 g) plain flour. Weighing is generally more consistent, but cup weights vary with the flour and how it is packed. If using cups, fluff the flour, spoon it lightly into the cup, and level the top without tapping or pressing it down.
Calculate the baking powder. Multiply the flour quantity by 1½ teaspoons (about 6 g) for each cup (120 g). For 2 cups (240 g) flour, add 3 teaspoons (about 12 g); for 3 cups (360 g), add 4½ teaspoons (about 18 g). Use level measuring spoons, not heaped ones. If your recipe uses a different flour weight per cup, use its stated weight and keep the ratio in mind rather than assuming all cups weigh exactly the same.
Decide whether to add salt. If the recipe already lists salt, do not add the extra ¼ teaspoon (about 1.5 g) per cup as well. If it has no salt, adding that amount gives a useful starting point for a typical American-style self-rising flour. Salt levels in packaged self-rising and self-raising flours differ, so this is an approximation, not an exact match. For a low-salt recipe or a salt-sensitive dish, leave it out or add less.
Combine the dry ingredients thoroughly. Put the plain flour and baking powder in a bowl, adding salt if required. Whisk for about 20–30 seconds, scraping the bottom and sides, or sift them together once. This distributes the baking powder so the mixture rises evenly. Avoid tipping a concentrated mound of baking powder directly onto wet batter; it can leave bitter-tasting pockets and uneven lift.
Continue with the recipe promptly. Treat the combined dry mixture as the self-rising flour and follow the remaining instructions. Once baking powder is moistened, its leavening reaction begins, so do not leave mixed batter sitting around unnecessarily. If the recipe says to chill or rest the dough, follow that direction; otherwise, get it into the oven or onto the cooking surface at the time the recipe specifies.
Make a small adjustment only when the recipe calls for it. If the original recipe lists both self-rising flour and a separate amount of baking powder, do not blindly add the full standard dose as well. The extra baking powder may already be part of the recipe’s intended balance. Follow any notes written for plain flour; if there are none, consider the recipe’s complete leavener list and use a tested version of the recipe when possible. Adding too much can make baked goods rise quickly and then collapse.

Common Mistakes

Adding baking powder when the recipe already supplies enough. Some recipes call for self-rising flour and also include baking powder. Adding 1½ teaspoons per cup on top of every listed amount can produce too much lift. Read the whole ingredient list first, and do not treat the general ratio as a reason to increase a recipe’s stated leavener automatically.

Using baking soda as a one-for-one replacement. Baking soda is not the same as baking powder. It needs an acidic ingredient in the recipe to react, and it is more concentrated. Replacing baking powder with the same quantity of soda can leave a strong, soapy or metallic taste and may affect browning. Use baking powder for this basic swap.

Forgetting the recipe’s salt. Self-rising flour commonly has salt, but the amount varies and some self-raising flour products may contain little or none. Adding the extra salt without checking can make the finished food too salty. Conversely, leaving it out of a recipe with no other salt can make the result taste flat. Check the flour label if you are trying to match a particular product.

Measuring flour by packing it into a cup. Pressed or scooped flour can weigh considerably more than a lightly filled cup. That extra flour makes batter or dough dense and dry, even if the leavening ratio is correct. Spoon flour into the cup and level it, or use the gram weight given by the recipe.

Mixing too vigorously after adding liquid. Baking powder helps the dough rise, but it cannot prevent a tough result if you overwork a batter that should be mixed gently. Follow the recipe’s mixing cues and stop when the ingredients are combined, especially for biscuits, muffins, and quick breads.

Tips

Use fresh baking powder. If it has been open for a long time, stored somewhere damp, or is past its best-before date, it may not lift the batter reliably. When in doubt, stir a little into hot water: it should fizz promptly. This is a quick check rather than a precise measure of how well it will perform in a full recipe.

For a dependable result, use the same unit throughout. If the flour is measured by weight, weigh the plain flour and use level teaspoons for the baking powder; if the recipe is in cups, measure the flour lightly and use measuring spoons for the leavener. The metric amounts above are practical equivalents, not a claim that every flour or spoon has an identical weight.

Remember that self-rising flour is a convenience blend, not a special kind of wheat flour. Plain flour plus baking powder can work well, but the substitute may not exactly copy the brand, salt level, or leavening strength used by the recipe writer. Small differences are usually less noticeable in simple pancakes or biscuits than in a carefully balanced cake.

If you bake this way often, you can mix only the amount you need for each recipe. This avoids confusion about how much baking powder is already in a stored blend and lets you adjust salt to suit the recipe. Keep the baking powder itself tightly closed and dry, following the storage directions on its package.

Troubleshooting

The bake did not rise much. Check that the baking powder was fresh and that you used the full amount for the flour quantity. Make sure you did not confuse teaspoons with tablespoons, and check whether the oven was fully preheated if the recipe is oven-baked. A batter left standing for a long time after mixing may also lose some lift. For the next batch, combine the dry ingredients evenly and bake as soon as the recipe directs.

The center sank after rising. Too much leavener can make a cake or quick bread balloon early and then collapse before its structure sets. It can also happen if the center is underbaked or the oven door is opened too soon. Review whether the recipe already included baking powder, measure carefully, and use the doneness cues in the recipe rather than relying only on a browned top.

The result tastes bitter, salty, or soapy. Bitter or chemical notes often point to excess baking powder or baking soda, or to dry ingredients that were not mixed evenly. A salty result suggests that salt was added even though the recipe or flour already supplied it. You generally cannot remove these flavors once the food is baked, so adjust the quantities for the next attempt and double-check the ingredient list before mixing.

The dough or batter seems unusually stiff. Too much flour is a common cause. Check whether the cup was packed, whether the recipe uses a different flour weight, and whether the flour was measured before or after sifting as directed. Add liquid only if the recipe allows for adjustment; otherwise, changing the texture mid-recipe can create a new imbalance.

The texture is dense despite a good rise. The flour substitution may not be the only factor. Overmixing, old baking powder, or using a recipe designed for a particular self-rising flour can affect the crumb. Mix gently where instructed, use a reliable recipe, and avoid changing the leavener and liquid quantities at the same time.

Frequently Asked Questions

What is the basic ratio for plain flour instead of self-rising flour?
For each 1 cup (120 g) self-rising flour, use 1 cup (120 g) plain flour and 1½ teaspoons (about 6 g) baking powder. Add ¼ teaspoon (about 1.5 g) salt only if the recipe does not already include salt.

Can I use plain flour without adding baking powder?
Only if the recipe supplies enough leavening elsewhere or the food is not meant to rise. In a cake, biscuit, or quick bread that relies on self-rising flour, plain flour alone will usually make the result flatter and denser.

Is plain flour the same as all-purpose flour?
In everyday baking terms, plain flour is broadly comparable to US all-purpose flour: neither is typically sold with a raising agent already mixed in. Protein levels can differ between products and countries, so the finished texture may not be identical, particularly in recipes where flour strength matters.

Should I add salt to the substitute every time?
No. Add salt only if the recipe has no salt and you want to approximate a typical self-rising flour blend. Packaged blends vary, so check the label if matching a specific product matters. For recipes that already include salt, leave the additional salt out.

Can I use baking soda instead of baking powder?
Not as a direct substitute. Baking soda needs enough acid in the recipe and should be used in a much smaller, recipe-specific quantity. For this general plain-flour swap, use baking powder unless the recipe provides a carefully balanced alternative.

Does this substitution work for every recipe?
It works for many everyday baked goods, but not every recipe will behave exactly the same. Some rely on a particular self-rising flour brand, flour strength, or salt level. Pay close attention to the original leavener quantities, especially when the recipe lists baking powder or baking soda separately.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

Spotted an error? Tell us and we will correct it (corrections policy).