Molar Mass Calculator
Calculate molar mass of any chemical compound. Enter a formula like H2O or C6H12O6 and get element breakdown.
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Instantly calculate the molar mass of any chemical compound by entering its formula. Get detailed element breakdowns and percentage composition to support chemistry homework, lab work, or chemical research.
How it works
- 1Enter a chemical formula like H2O, NaCl, or C6H12O6
- 2View the molar mass in g/mol and element breakdown
- 3See percentage composition of each element
- 4Copy results for your chemistry work or calculations
Who uses this tool
- ✓Chemistry students verifying molar mass for homework problems
- ✓Lab technicians preparing solutions and stoichiometric calculations
- ✓Educators creating chemistry lesson materials and exam questions
- ✓Researchers analyzing chemical compound properties and composition
- ✓Anyone quickly checking molecular weight without reference tables
Frequently Asked Questions
How do I write a chemical formula?
Use standard element symbols with numbers as subscripts: H2O, NaCl, C6H12O6. Parentheses are supported: Ca(OH)2.
Which elements are supported?
We include the 20 most common elements in chemistry: H, C, N, O, Na, Cl, K, Ca, Fe, Cu, Zn, S, P, Mg, Al, Si, Br, I, F, Mn.
What is molar mass used for?
Molar mass is essential for stoichiometry calculations — converting between grams and moles in chemical reactions.
Why does the result show a breakdown?
The breakdown shows each element's contribution to the total molar mass, making it easier to verify your formula and understand the composition.