Henderson-Hasselbalch Calculator

Calculate pH, pKa, or the ratio of conjugate base to acid using the Henderson-Hasselbalch equation for buffer solutions.

Calculate *

Buffer System *

pKa *

pKa

[A⁻]/[HA] Ratio *

ratio

Show Steps

⚠️

Buffer Solution

—

📋

Calculation Breakdown

Step-by-step buffer calculation

🧪

—

Buffer pH

📐

pKa

—

Acid dissociation

📊

Ratio [A⁻]/[HA]

—

Base/Acid

🔬

Buffer

—

System

📖

Henderson-Hasselbalch Formulas

Key buffer concepts

💡

Buffer Tips

Understanding buffer solutions

🧪 Chemical Disclaimer: This Henderson-Hasselbalch calculator uses the equation pH = pKa + log([A⁻]/[HA]). It is valid for weak acids and their conjugate bases. Results are for educational purposes.