About the Buffer pH Calculator
A free tool for finding buffer solution pH from pKa and concentrations.
What it is
This calculator applies the Henderson-Hasselbalch equation to find the pH of a buffer solution from the weak acid's pKa and the concentrations of the conjugate base and weak acid, and rates the buffer's effectiveness at that pH.
Features
Henderson-Hasselbalch
The standard equation used throughout biochemistry.
Buffer capacity note
See how close your buffer is to its most effective range.
Step-by-step
See the equation substituted with your exact numbers.
Instant, private
Runs entirely in your browser. No data is sent anywhere.