pOH Calculator
pOH = −log₁₀[OH⁻] • pH + pOH = 14
How to use pOH Calculator
- Enter the hydroxide ion concentration [OH⁻].
- pOH calculates as −log₁₀[OH⁻]. Since pH + pOH = 14 at 25°C, pH derives automatically too.
About this tool
pOH Calculator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
Category: Science & Engineering — Chemistry. Browse more Science & Engineering — Chemistry tools.