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Molar Mass Calculator

Find the molar mass of any compound by typing its chemical formula. This calculator parses formulas with element symbols, subscripts and nested parentheses, so it handles simple molecules like H2O and CO2 as well as more involved ones like Ca(OH)2 or CuSO4. It looks up each element in a built in table of standard atomic weights, multiplies by the count, and sums everything to give you the molar mass in grams per mole. It also shows a per element breakdown so you can check the parse and see how each atom contributes. Molar mass is the bridge between grams and moles, which makes this essential for stoichiometry, solution prep and lab calculations. Type a formula and the answer appears instantly, all computed in your browser.

How to use Molar Mass Calculator

  1. Type a chemical formula like H2O, NaCl, or Ca(OH)2.
  2. Read the total molar mass in grams per mole.
  3. Review the per element breakdown of the mass.

Frequently asked questions

How do I enter a chemical formula?

Type the formula using element symbols and counts, such as H2O or Ca(OH)2. Parentheses and multipliers are supported.

How is molar mass calculated?

The tool sums the standard atomic weights of each atom in the formula to give the molar mass in grams per mole.

Does it show a per element breakdown?

Yes. It lists each element with its atom count and mass contribution so you can see how the total is built up.

What is Molar Mass Calculator?

Find the molar mass of any compound by typing its chemical formula. This calculator parses formulas with element symbols, subscripts and nested parentheses, so it handles simple molecules like H2O and CO2 as well as more involved ones like Ca(OH)2 or CuSO4.

Is Molar Mass Calculator free to use?

Yes. Molar Mass Calculator is completely free, with no sign-up and no usage limits.

Does Molar Mass Calculator work in a web browser?

Yes. Molar Mass Calculator runs in any modern web browser. There is nothing to download or install.

Is my data private with Molar Mass Calculator?

Yes. Molar Mass Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.