pH Calculator

Pure water is 1e-7 mol/L. Ignored in '[H⁺] from pH' mode.
Only used in '[H⁺] from pH' mode.
Worked example result
pH7.000
pOH7.000
[H⁺] concentration0.0000001000 mol/L
[H⁺] (scientific notation)1.000e-7 mol/L
Solution isNeutral

Pure water with [H⁺] = 1×10⁻⁷ mol/L has pH 7.00 and pOH 7.00 — neutral.

pH = −log₁₀[H⁺]; pOH = 14 − pH; [H⁺] = 10^(−pH) (at 25 °C) · Powered by CalcHub — pH Calculator