Convert between normality, molarity and equivalent weight.
Normality counts reactive equivalents rather than molecules, so sulfuric acid at 0.5 M is 1.0 N because each molecule supplies two protons. It simplifies titration arithmetic to a one-to-one comparison. Normality depends on the reaction being considered, so the same solution can have different normalities in acid-base and redox contexts.
Normality
N = M × equivalents per mole; equivalent weight = molar mass ÷ equivalents
N = M × equivalents per mole; equivalent weight = molar mass ÷ equivalents Normality counts reactive equivalents rather than molecules, so sulfuric acid at 0.5 M is 1.0 N because each molecule supplies two protons. It simplifies titration arithmetic to a one-to-one comparison.
Normality depends on the reaction being considered, so the same solution can have different normalities in acid-base and redox contexts.
This calculator takes 4 inputs: Molarity, Equivalents per mole, Molar mass, Solution volume. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.