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Molecular Weight Calculator

Molar mass from a simple formula.

Molecular weight

Molar mass
180.156 g/mol
Mass for 1 mol
180.16 g
Weigh out this much for a 1 mol amount
Mass for 1 mmol
180.156 mg
Common bench-scale quantity
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Molecular Weight Calculator · Generated 5/2/2026 · calccenter.online/calculators/other/molecular-weight

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About the Molecular Weight Calculator

MethodologyHome

Molar mass from a simple formula. Use this free molecular weight calculator to get instant results. All calculations run in your browser — nothing is sent to a server.

Frequently asked questions

What does this Molecular Weight Calculator do?

Molar mass from a simple formula.

Is it free?

Yes — every calculator on Calc Center is free, with no sign-up or account required.

Does it work offline?

The site is a Progressive Web App — after your first visit, most pages work without an internet connection.