Moles to Particles Calculator

About this calculator

The mole is chemistry's counting unit for atoms and molecules, and Avogadro's number, 6.022×10²³ per mole, is the fixed conversion factor between an amount in moles and the actual count of individual particles it represents — multiplying moles by Avogadro's number, N = n × Nₐ, gives that particle count directly.

This conversion sits at the foundation of quantitative chemistry: it is how a measurable, weighable quantity of substance in a lab connects to the microscopic count of atoms or molecules that determines how a reaction actually proceeds at the particle level, and it appears constantly in stoichiometry problems relating mass, moles, and particle count.