Molar Mass Calculator

Molar mass is the mass of one mole (6. 022 × 10²³ particles) of a substance, expressed in grams per mole (g/mol)

The calculator uses the standard published formula for molar mass calc. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Molar mass = sum of (atomic mass × count) for each element. Each step in the calculation is shown so you can verify the result manually.