What does this alkalinity calculator output?
It converts your pool gallons and desired TA increase into ounces and pounds of sodium bicarbonate, commonly sold as baking soda or alkalinity increaser.
Free Pool Tool | Ellis County, TX
Pool Alkalinity Calculator
Raise total alkalinity with sodium bicarbonate so pH stops bouncing around.
Calculator
Enter your pool numbers
Fractions like 1/4 or 1/8 work in number fields. Results are planning estimates, not a binding service diagnosis.
Result
1,344 oz Baking soda
Add in portions when making a large correction, circulate, and retest.
Pounds84 lb
Increase30 ppm
How to use the dose
How to add baking soda
Calculate the dose, dissolve it before adding, and give it time to circulate before you retest or add anything else.
- Test total alkalinityUse a titration test — strips are useful for screening but not for fine dosing.
- Calculate the doseUse this calculator with your gallons and desired TA increase to get ounces and pounds of baking soda.
- Dissolve and add with the pump runningDissolve baking soda in a bucket of pool water before adding — dumping it dry clouds the water — then pour into the deep end with the pump running.
- Wait 6 hours and retestDon't add acid the same day, and let the water fully circulate before trusting the new reading.
Pro Take
You can do this yourself. Or you can stop chasing it.
If alkalinity keeps drifting, your sanitizer mix, source water, or refill pattern may be the real cause. A&M can find that pattern.
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How to test
Get the reading before you dose
Use a total alkalinity titration test. Strips are useful for screening, not fine dosing.
- Dissolve baking soda before adding to reduce clouding.
- Do not add acid the same day.
- Retest after several hours of circulation.
Companion Guide
Why Total Alkalinity Is the Most Ignored Number in Your Pool
Read the paired blog post for the plain-English version of the chemistry, testing, and common homeowner mistakes.
Read the guideFAQ
Baking Soda Alkalinity Calculator FAQs
What target TA should I enter?
Most chlorine pools can start with 80 to 120 ppm. Salt pools often run slightly lower depending on the equipment manual and how quickly pH rises.
Can I use household baking soda in this calculator?
Yes, if the label is plain sodium bicarbonate. The calculator treats baking soda and pool alkalinity increaser as the same active chemical for dosing.