Self-Rising Flour Calculator
Turn plain flour into self-rising flour with baking powder and salt.
Last updated · View algorithm, constants and default inputs (JSON)
About this calculator
This recipe-style conversion uses one US cup as 125 g of plain flour, with 1.5 tsp baking powder and 0.5 tsp salt per cup. Flour packing and salt density vary, so weigh ingredients and follow the recipe or flour maker when precision matters.
Worked example
calculated with the default values below
US cups of self-rising flour needed 2 cups Plain flour 250 g · Baking powder 3 tsp · Salt 1 tsp · Salt 6 g
General background references
Disclaimer
These calculators give general cooking guidance. Ingredient density, oven calibration, altitude and equipment all vary, and safe minimum internal temperatures always take precedence over timings. Follow the food-safety advice issued by your national authority.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
F = 125c; B = 1.5c; S = 0.5c; S_g = 3c
- c
- Cups of plain flour
- F
- Plain flour (g)
- B
- Baking powder (tsp)
- S
- Salt (tsp)
- S_g
- Salt (g)
Per cup: 125 g flour, 1.5 tsp baking powder, 0.5 tsp salt; 1 tsp salt = 6 g.
Frequently asked questions
How much baking powder replaces two cups of self-rising flour?
The tool converts each cup of self-rising flour into 125 grams of plain flour plus 1.5 teaspoons of baking powder and 0.5 teaspoon of salt, so two cups need 250 grams of flour, 3 teaspoons of baking powder and 1 teaspoon, or 6 grams, of salt. The salt is scaled the same per cup as the leavening, which matches the standard blend already mixed into commercial self-rising flour.