pH & Buffer Calculator

Calculate pH, pOH, ion concentrations, acid/base equilibria, and Henderson–Hasselbalch buffer pH

Input Mode

pH Value 7

Results

pH = 7

neutral

7

pH

7

pOH

1.000e-7

[H⁺] mol/L

1.000e-7

[OH⁻] mol/L

14

pKw (pH + pOH)

1e-14

Kw at 25 °C