Buffer Capacity Calculator | Free pH Stability Tool

Calculate buffer capacity instantly. Enter acid/base concentrations and pKa to determine pH resistance. Essential for lab work, pharma formulations & research.

Buffer Capacity Calculator

Input Parameters

Result

Buffer Capacity

Enter all values to calculate

Formula

β = 2.303 × C × Ka × [H+] / ([H+] + Ka)²

Where C is the total concentration, Ka is the acid dissociation constant, and [H+] is the hydrogen ion concentration.

Visualization

The graph shows buffer capacity as a function of pH. Maximum buffer capacity occurs at pH = pKa.

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Documentation

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