Free Online pH Calculator

Professional Chemical Solution pH Analysis Tool

Ion Concentration Input

About This pH Calculator

Our free online pH calculator is a professional tool for analyzing chemical solutions. It uses advanced computational algorithms to provide accurate pH calculations based on ion concentrations.

Key Features:

  • Multiple Units Support: mg/L, mol/L, mmol/L, and ppm
  • Wide Ion Range: Supports common ions like Ca²⁺, Mg²⁺, Na⁺, K⁺, HCO₃⁻, SO₄²⁻, Cl⁻
  • Temperature Control: Adjustable temperature settings (0-200°C)
  • Professional Accuracy: Advanced chemical equilibrium calculations
  • Free to Use: No registration or payment required

Common Use Cases:

  • Water quality analysis and testing
  • Chemical solution preparation
  • Environmental monitoring
  • Educational chemistry projects
  • Laboratory research and development

How to Use:

  1. Set the temperature (default: 25°C)
  2. Choose the appropriate unit (mg/L, mol/L, etc.)
  3. Select the ion type from the dropdown menu
  4. Enter the concentration value
  5. Add more ions if needed using the "Add Ion" button
  6. Click "Calculate pH" to get your result