pH / pOH Calculator

pH, pOH, [H⁺], and [OH⁻] with an acidity scale

pH + pOH = 14 · pH = −log₁₀[H⁺] · [H⁺][OH⁻] = 1.0×10⁻¹⁴
pH
3
pOH
11
[H⁺] concentration
1E-3mol/L
[OH⁻] concentration
1E-11mol/L
Solution is
Acidic
Acidity scale from pH 0 (strongly acidic) to pH 14 (strongly basic) with a marker at the computed pH.A colored pH scale; the marker shows where this solution falls between strongly acidic on the left and strongly basic on the right, with neutral water at pH 7.AcidicNeutralBasic02468101214pH 3AcidicpOH 11