Avogadro Calculator
Inputs
mol⁻¹
Change only if you need a different constant (exact SI: 6.02214076×10²³ mol⁻¹).
Unit changes convert the number to keep the same physical mass.
× 10^
mol
Enter “a” and integer exponent “b” so that n = a × 10^b mol.
Results
Molecular weight (molar mass)
g/mol
Number of atoms (scientific form)
× 10^
Step-by-step derivation
Provide inputs to see the algebra with your values inserted.
References
- SI definition of the mole (exact): NA = 6.02214076×10²³ mol⁻¹.
- Core relations: N = n·NA, n = m/M, hence N = (m/M)·NA, M = m/n.
- Unit factors used: 1 µg=1e-6 g, 1 mg=1e-3 g, 1 dag=10 g, 1 kg=1000 g, 1 oz=28.349523125 g, 1 lb=453.59237 g.