Science & Environment
Molar Mass & Molecular Weight Calculator
Find the molar mass, moles per gram, and estimated atom/molecule count for common compounds.
Your inputs
Change any value to update the result instantly.
Molar mass
18.015 g/mol
Moles in sample
0.5551 mol
Moles per gram
0.0555 mol/g
Estimated molecules
334.2848 ×10²¹
Formula and working
moles = mass ÷ molar mass; molecules = moles × Nₐ
- 1
Collect the inputs
Compound = 1; Sample mass = 10 g
- 2
Apply the formula
moles = mass ÷ molar mass; molecules = moles × Nₐ
- 3
Result
Molar mass = 18.015 g/mol
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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