Grams to Moles Converter
Convert mass in grams to moles (or back) by entering the molar mass of your substance — n = m ÷ M.
Result (mol or g)
1.00
Breakdown
- Particles (× Avogadro)
- 6.017126e+23
- Molar mass used (g/mol)
- 18.02
Last updated:
FAQ
How do I convert grams to moles?
Divide mass by molar mass: n = m / M. For example, 18.015 g of water (M = 18.015 g/mol) is exactly 1 mol.
Where can I find a substance's molar mass?
Read it from the substance's Safety Data Sheet, a periodic table (add up the atomic masses × counts), or compute it with a molar mass calculator. Common values: H₂O 18.015, NaCl 58.44, CO₂ 44.01, glucose 180.156 g/mol.
Why do chemists use moles?
A mole is 6.022×10²³ particles, so it converts 'how many atoms/molecules' into a weighable mass. Reactions balance in moles, not grams.
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