The Normality Calculator helps you determine the normality (N) of a solution, which is a measure of concentration expressed as the number of gram equivalents of solute per liter of solution. The formula used is N = (Equivalent weight × solute mass) ÷ (Equivalent factor × solution volume in liters). Normality is commonly used in acid-base reactions, redox reactions, and titration processes, where it provides a convenient way to express reactive capacity. Simply input the solute mass, equivalent weight, and volume of the solution — the calculator will instantly show you the normality of your solution.