pH Calculator
Calculate pH, pOH, and buffer solutions with visual representation and common examples.
Common Solutions
About pH Calculator
The pH scale measures how acidic or basic a solution is. A pH of 7 is neutral, below 7 is acidic, and above 7 is basic. The scale is logarithmic, meaning each step represents a tenfold change in hydrogen ion concentration.
Formulas Used
pH = -log₁₀[H⁺]
pOH = -log₁₀[OH⁻]
pH + pOH = 14
[H⁺][OH⁻] = 1.0 × 10⁻¹⁴
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