pH Calculator
Compute pH from [H+], [OH-], or pOH.
pH Calculator
Calculate pH from [H+], [OH-], or pOH. Assumes $pH + pOH = 14$ at 25°C.
Note: The relationship $pH + pOH = 14$ depends on temperature. This tool uses the common classroom approximation at 25°C.
About This Tool
All calculations run locally in your browser. Nothing is uploaded.