pH Calculator

Calculate pH from hydrogen ion concentration.

Enter Value

Choose calculation mode

pH Value
[H⁺] Concentration (mol/L)
Use scientific notation: 1e-7 for 1×10⁻⁷
pOH Value

Enter your values above and tap Calculate to see the result.

Your Results

pH Value
[H⁺] (mol/L)
[OH⁻] (mol/L)
pOH Value
pH Scale
0 (Acidic) 7 (Neutral) 14 (Basic)
Step-by-step Solution