Calculate pH from hydrogen ion concentration (pH = -log[H+]). Perfect for chemistry students and laboratory work.
pH Calculator is a free online tool that calculates the pH of a solution from its hydrogen ion concentration using the formula pH = -log[H+]. It helps determine whether a solution is acidic, neutral, or basic. Perfect for chemistry students, laboratory technicians, and anyone working with solutions.
pH is a measure of the acidity or basicity of a solution. It ranges from 0 to 14, where 7 is neutral, values below 7 are acidic, and values above 7 are basic. pH is defined as the negative logarithm of the hydrogen ion concentration.
The pH scale is logarithmic, meaning each unit change represents a tenfold change in hydrogen ion concentration. For example, a solution with pH 3 has 10 times more H+ ions than a solution with pH 4.
The calculator supports multiple concentration units (M, mM, μM, nM, pM). All conversions are handled automatically to calculate the correct pH value.
This calculator is specifically for calculating pH from hydrogen ion concentration. For pH from pOH, you would use the relationship pH + pOH = 14 at 25°C.
Yes, all calculations happen locally in your browser. Your data never leaves your device.
Yes, once loaded, the calculator works completely offline in your browser.