Chemistry

Henderson-Hasselbalch Calculator

Lets users compute and verify henderson-hasselbalch instantly with formula, steps and examples — no manual math.

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mol/L
mol/L
Your result
Buffer pH
4.76

pH = pKa + log([A⁻]/[HA]) = 4.76 + log(1.00) = 4.76.

Base/acid ratio
1

About this calculator

Henderson-Hasselbalch: pH = pKa + log([A⁻]/[HA]). Buffers resist pH change best when [A⁻]≈[HA] (pH≈pKa). Fundamental to buffer preparation and physiology (blood, at pH 7.4).

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