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pH Calculator

PRO

Calculate pH from H⁺ concentration, or convert between pH, pOH and Kw.

Dr. Lena FischerVerified

PhD Chemistry (Analytical), MRSC

Analytical chemist with 12 years in pharmaceutical QA, spectroscopy, and solution chemistry. Passionate about making chemistry accessible.

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Molarity Calculator

Calculate molar concentration (mol/L) from mass, molar mass and volume.

Buffer pH Calculator

Calculate pH of a buffer solution using the Henderson-Hasselbalch equation.

Acid-Base Titration Calculator

Find unknown acid/base concentration from titration data.

pH is a logarithmic scale from 0–14 measuring the acidity or alkalinity of a solution. pH 7 is neutral, below 7 is acidic, above 7 is basic.

pH = -\log_{10}[H^+]

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