Molarity Calculator

Solve concentration in mol/L from moles and volume, or use a chemical formula and solute mass to calculate moles automatically.

Input method

Amount

Solution volume

Chemical formula for mass mode

—M = n / V

—Moles solute

—Molar mass

—mM

—µM

How to use this Molarity Calculator

Calculate molarity from moles or solute mass and solution volume. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.