Free Molecule Count Calculator
Calculate the number of molecules in a given mass of a compound.
g
g/mol
Number of Molecules
601,698,584,512,905,900,000,000.000
Moles0.9992 mol
Number of Molecules vs Mass of Compound
How to Count Molecules
Formula
N = (mass / molar mass) × 6.022 × 10^23
Example Calculation
How many molecules in 18 g of water?
- 01Moles = 18 / 18.015 = 0.999 mol
- 02Molecules = 0.999 × 6.022 × 10^23 ~ 6.02 × 10^23
Frequently Asked Questions
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