What Can I Substitute for Self Rising Flour? | DIY Baking Mix

A reliable substitute for self-rising flour is 1 cup of all-purpose flour mixed with 1½ teaspoons of baking powder and ¼ teaspoon of salt, whisked thoroughly until evenly combined.

Most kitchens keep all-purpose flour, baking powder, and salt on hand, which makes this swap almost effortless when a biscuit or quick bread recipe calls for self-rising flour and the box is empty. The formula works because commercial self-rising flour is simply flour with a precise amount of leavening and salt already blended in — you are just building the same thing from scratch. The table below breaks down the exact ratios for different flour types, and the steps that follow walk you through mixing them correctly so your baked goods rise evenly without bitter spots.

The Standard Substitute Ratio

Per 1 cup of self-rising flour, use exactly 120 grams of all-purpose flour, 5.5 grams of baking powder (about 1½ teaspoons), and 1.13 grams of salt (about ¼ teaspoon). King Arthur Baking confirms this as the standard US formula. Whisk the three ingredients together thoroughly until the baking powder and salt are evenly distributed — lumpy mixing is the most common reason for uneven rise and pockets of bitter flavor in finished biscuits or scones. Use the mixture immediately for best results, or store it in an airtight container for future use.

Flour-Specific Variations

Different base flours produce predictably different textures, and each one needs a slightly adjusted ratio to stay close to commercial self-rising results.

For cake flour specifically, Food52 recommends 1 cup cake flour plus 1¼ teaspoons baking powder and ¼ teaspoon salt. If you only have all-purpose flour but want a softer crumb, replace 2 tablespoons of all-purpose flour with 2 tablespoons of cornstarch and sift the blend together before adding the leavening. This trick lowers the protein content and produces a more tender result close to cake flour.

When To Use — and Avoid — This Substitute

The all-purpose blend works best for biscuits, pancakes, quick breads, cakes, and scones — any recipe that relies on baking powder for lift rather than yeast. Do not use this substitute in recipes that already contain significant amounts of baking soda, acidic ingredients like yogurt or vinegar, or yeast as the primary leavening agent; the extra baking powder can throw off the chemistry and affect the flavor or structure. For UK recipes, Nigella notes that British self-raising flour often contains more leavening — roughly 2 teaspoons of baking powder and ½ teaspoon of salt per 150-gram cup — so adjust the ratio upward if you are following a UK-style recipe in the US.

King Arthur Baking also mentions two less common alternatives: using ¼ teaspoon baking soda alongside the standard baking powder for a slightly higher rise, or substituting 1 cup of pureed beans or bean flour with 1 teaspoon of baking powder for a high-protein option. Neither is a direct swap for standard baking, but both work in specific applications where texture matters less than nutritional content.

Common Mistakes That Ruin the Substitution

Confusing baking soda with baking powder is the most frequent error. Self-rising flour depends on baking powder, which contains both an acid and a base so it activates when wet. Baking soda alone needs an acidic ingredient like buttermilk or lemon juice to react, and using it straight will leave a bitter, metallic taste in your finished bake.

Overdoing the salt is the second most common problem. A full half-teaspoon instead of the proper quarter-teaspoon per cup makes biscuits taste aggressively salty and can suppress the rise by changing how the gluten relaxes. Stick to ¼ teaspoon per cup unless the recipe specifically calls for more.

Expired baking powder guarantees failure. Baking powder loses its leavening power after about six months. Check the expiration date on your container — if it is old, drop a half-teaspoon into hot water; if it fizzes vigorously, it is still active. No fizz means the substitute will not rise, no matter how carefully you measure.

Incomplete mixing creates bitter spots. A quick stir is not enough. Whisk the flour, baking powder, and salt for at least 15 seconds until the powder color is uniform throughout the bowl. An unmixed pocket of straight baking powder will taste intensely bitter when baked and will not lift that part of the dough.

FAQs

Can I make self-rising flour with whole-wheat flour?

Yes, but the texture will be denser and heavier than the all-purpose version. Use 1 cup whole-wheat flour, 1½ teaspoons baking powder, and ¼ teaspoon salt. You may need to add an extra tablespoon of liquid to compensate for the higher fiber content of whole-wheat flour.

Does self-rising flour substitute work for yeast breads?

No. Self-rising flour and its substitutes rely on baking powder for lift, which reacts immediately with moisture and heat. Yeast breads require a slow fermentation process that baking powder cannot replicate, and the extra salt in the substitute can actually inhibit yeast activity.

How long does homemade self-rising flour keep?

Stored in an airtight container in a cool, dry place, the mixture stays active for about three months. After that, the baking powder gradually loses potency. Label the container with the date you mixed it so you know when to toss it and make a fresh batch.