Buffer pH (Henderson–Hasselbalch)
Calculate Buffer pH (Henderson–Hasselbalch) instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.
Buffer pH (Henderson–Hasselbalch)
pKa
[A−]/[HA]
pH
5.061
More about: Buffer pH (Henderson–Hasselbalch)
What it calculates
The “Buffer pH (Henderson–Hasselbalch)” calculator computes pH from 2 parameters: pka, [a−]/[ha].
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters pKa = 4.76, [A−]/[HA] = 2 the result is 5.06.
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.