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Molar mass calculator
The molar mass of any formula like Ca(OH)2, with the percentage of each element.
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About Molar mass calculator
Type a formula such as Ca(OH)2 or C6H12O6 and get its molar mass in g/mol by adding up atomic masses, with brackets and subscripts handled. The percent composition shows how much each element contributes, which is needed for stoichiometry and converting between grams and moles.
How to use Molar mass calculator
- Enter your numbers above.
- The result updates instantly as you type.
- Change any value to compare different cases.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
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Frequently asked questions
What is the molar mass of water?
About 18.015 g/mol: two hydrogen atoms at about 1.008 each plus one oxygen atom at about 15.999.
Is Molar mass calculator free?
Yes. Molar mass calculator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.