pH Calculator

How to Use This Calculator

Enter the hydrogen ion concentration [H⁺] in the input box. The calculator will automatically compute the pH value using the formula below.

What is This Calculator Used For?

This pH calculator is used to determine the acidity or basicity of a solution based on its hydrogen ion concentration. It is commonly used in chemistry labs, biology, environmental science, and industrial applications.

Formula

pH = -log₁₀[H⁺]

Example

If the hydrogen ion concentration is 0.001 mol/L, then:

• pH = -log₁₀(0.001) = 3