Math & Science

Molar Mass Calculator

Molecular weight of any chemical formula, with each element’s mass percentage and grams-to-moles. Free, no sign-up, and it runs in your browser — your files are never uploaded.

How to use

1. Type a formula like H2SO4 or CuSO4·5H2O
2. Read the molar mass and element breakdown
3. Enter grams to get moles and molecules

Questions

Do I need an account?

No. Every tool is free to use without signing up.

Is my data uploaded?

No. This tool runs in your browser, so the text and files you use stay on your device.

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