pH Adjustment Calculator
Acid or base needed to shift pH.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Reagent needed
- 0.0001 L
- Moles required
- 0.00006
- Direction
- Add acid
- pH change
- 1
Quick answer
Shifting pH by one unit changes hydrogen ion concentration tenfold.
Δ[H+] = 10^−target − 10^−current
How to use the pH Adjustment Calculator
- 1Enter the solution volume.
- 2Enter current and target pH.
- 3Enter reagent molarity.
Frequently asked questions
Why is my real dose higher?
Buffering capacity resists pH change — always dose gradually and retest.
Is this safe for pools?
Use it as a guide only and follow the product's dosing chart.