Buffer Calculator
Advanced Buffer Calculator
Calculate buffer composition using the Henderson–Hasselbalch equation.
Buffer Parameters
Optional Stock Solution
Formula:
pH = pKa + log₁₀([A⁻]/[HA])
The calculator determines the required ratio of conjugate base to weak acid and estimates the required amounts for the selected final volume.
pH = pKa + log₁₀([A⁻]/[HA])
The calculator determines the required ratio of conjugate base to weak acid and estimates the required amounts for the selected final volume.
Required pH
—
Acid / Base Ratio
—
Weak Acid
—
Conjugate Base
—
Buffer Equilibrium Animation
pH: 4.76
HA ⇌ H⁺ + A⁻