pOH Calculator

Find pOH and pH from hydroxide concentration.

pOH 3

pH 11

Formula: pOH = −log₁₀[OH⁻] ; pH = 14 − pOH

Step-by-step with your numbers:

1. Values used:

2. [OH⁻] concentration = 0.001 mol/L

4. pOH = 3

5. pH = 11

Did we solve your problem today?

pOH measures basicity from the hydroxide ion concentration.

The math behind it

pOH = −log₁₀[OH⁻]; at 25 °C, pH + pOH = 14.

[OH⁻] = 10⁻³ → pOH 3, pH 11.

Basic solution?

pOH below 7 (pH above 7) means basic.