chemistry
Strong Acid and Base pH Calculator
Calculate pH, pOH, hydrogen and hydroxide concentrations from strong acid/base concentration with water autoionization.
Calculator
Formula
Kᵥ=[H⁺][OH⁻]
Assumptions and limits
- Complete dissociation and ideal activities are assumed; results near high ionic strength are approximate.
Example
Editable worked example
The calculator starts with an editable example.
Sources
- Chemistry 2e — OpenStax
Frequently asked questions
Are my inputs uploaded?
No. This calculator runs locally in your browser. Inputs are placed in a URL only when you explicitly copy a share link.
Why are units converted first?
Canonical units prevent scale errors when inputs use mixed units. The result is converted back to your selected output unit afterward.
Does the result replace professional judgment?
No. The result applies only to the stated model and assumptions. Qualified people should review high-risk engineering, medical, or laboratory decisions.