Leavening Agent Quantity Calculator

Work out leavening agent quantity instantly with clear inputs, formula shown and shareable results.

About Leavening Agent Quantity Calculator

Baking powder is typically dosed at 1.5-3% of flour weight and contains around 30% sodium bicarbonate with the balance acid and starch. Using bicarbonate alone requires a matched acid dosed by its neutralising value. Each gram of bicarbonate releases about 0.524 grams of carbon dioxide when fully reacted.

Formulas

Baking powder

Baking powder = flour x rate %; bicarbonate equivalent = baking powder x 0.30

Acid requirement

Acid = bicarbonate x 100 / neutralising value

Worked example

With the default values below, Leavening Agent Quantity Calculator returns Leavening Agent Required of 6.000. Change any input above and every figure here is recalculated in your browser.

Inputs used

Flour Weightminimum 0 g: 1,000 g
Baking Powder Rateminimum 0 % of flour: 2 % of flour
Use Soda With Acid Instead: Yes
Neutralising Value Of Acidminimum 0: 80

Results

Leavening Agent Required: 6.000
Acid Required: 7.500
Carbon Dioxide Released: 3.1440
Baking Powder Equivalent: 20.000

Step by step

1Values used
2Baking powder
3Acid requirement
4Leavening Agent Required= 6.000
5Acid Required= 7.500
6Carbon Dioxide Released= 3.1440
7Baking Powder Equivalent= 20.000

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

What happens if the acid is insufficient?

Unreacted bicarbonate leaves a soapy, bitter taste and a yellow crumb, and raises pH enough to affect colour and flavour. Excess acid gives a sour note and a tight crumb.

What is the difference between single and double acting?

Single acting releases all gas on mixing; double acting uses a fast acid plus a slow heat-activated acid such as SAPP or SALP, giving lift both in the bowl and in the oven.