What does the Molecular Weight Calculator work out?

Molar mass from a chemical formula. It is one of the Everyday & Tech tools on Mondo Knows.

How is the Molecular Weight Calculator calculated?

You get an instant answer with the working shown underneath.

Do I need to sign up, and is my data stored?

No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo Knows Tools

Molecular Weight Calculator

Molar mass from a chemical formula. Use the free molecular weight calculator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.

Chemical formula

Mondo says

Molar mass

180.156 g/mol

ElementsC, H, O

C: 6 x 12.011 = 72.066 g/mol
H: 12 x 1.008 = 12.096 g/mol
O: 6 x 15.999 = 95.994 g/mol

Molecular Weight Calculator: common questions

What does the Molecular Weight Calculator work out?: Molar mass from a chemical formula. It is one of the Everyday & Tech tools on Mondo Knows.
How is the Molecular Weight Calculator calculated?: You get an instant answer with the working shown underneath.
Do I need to sign up, and is my data stored?: No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

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Facts that connect to the molecular weight calculator

Short, sourced facts that point back to this tool.

Hemoglobin uses iron to transport oxygen through bloodMetalloprotein complexes in red blood cells bind oxygen in lungs and release it to tissues Epigenetics alters gene activity without changing DNA codeChemical tags on DNA control whether specific genes are switched on or off Cellulose gives plant cell walls structural strengthPolysaccharide glucose chains form rigid microfibrils that support plant architecture The periodic table organizes elements by proton countAtomic number dictates repeating chemical patterns across periods and groups

Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.