pH Calculator
Convert between pH, pOH, and H⁺/OH⁻ concentrations, and visualize acidity on the pH scale.
About pH
- pH 0–6: Acidic, pH 7: Neutral, pH 8–14: Basic
- pH = -log₁₀[H⁺], pOH = -log₁₀[OH⁻]
- In aqueous solution at 25°C: pH + pOH = 14
pH = -log₁₀[H⁺]
pOH = -log₁₀[OH⁻]
pH + pOH = 14 (25°C)