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DeWelopeTools

pH Scale Calculator

Convert between pH, H+ concentration (mol/L), and pOH. Shows the relationship between all values and indicates whether the solution is acidic, neutral, or basic.

How to Use pH Scale Calculator

The pH Scale Calculator converts between pH, pOH, and hydrogen ion concentration [H+] in mol/L. Enter any one value and get all others calculated automatically. The tool also tells you whether the solution is acidic (pH < 7), neutral (pH = 7), or basic/alkaline (pH > 7). Uses the relationships: pH = -log10([H+]), pOH = 14 - pH, and [H+] × [OH-] = 10^-14 at 25°C. Perfect for chemistry students, lab technicians, and anyone working with solutions.

Step-by-Step Instructions

  1. Select input type (pH, H+ concentration, or pOH)
  2. Enter the known value
  3. Click Calculate to see all related values
  4. View pH, pOH, H+ and OH- concentrations, and solution nature

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