Mole to Mass Calculator

This calculator converts between moles and mass using a substance's molar mass, and tells you how many particles that amount contains. The mole is the chemist's way of counting, a fixed number of particles, Avogadro's number, that lets us connect the invisible world of atoms and molecules to quantities we can actually weigh on a balance. Converting between moles and mass is the single most common calculation in chemistry, needed for preparing solutions, balancing reaction quantities, and almost every quantitative problem. The link between the two is the molar mass, the mass of one mole of the substance, which equals its relative atomic or molecular mass in grams. This calculator does the conversion. You enter the number of moles and the molar mass of the substance in grams per mole, and the calculator returns the mass in grams, the number of particles, atoms or molecules, that this represents, and your inputs for reference. The results update as you type. Use it for chemistry study, for laboratory work, or whenever you need to move between an amount in moles and a mass you can measure. The mass is the number of moles multiplied by the molar mass, and the number of particles is the moles multiplied by Avogadro's number, about 6.022 times ten to the twenty-three. To go the other way, from a mass to moles, you would divide the mass by the molar mass, the reverse of the headline calculation. Knowing the molar mass is the key: it comes from adding up the atomic masses of the atoms in the formula, which a periodic table provides. With the molar mass in hand, this conversion turns a count of particles into a weighable mass and back, the everyday bridge that makes quantitative chemistry possible.

Mass = moles x molar mass. Particles = moles x Avogadro's number (6.022 x 10^23). To find moles from a mass, divide the mass by the molar mass.