Avogadro Calculator
Calculate number of particles, moles, and mass using Avogadro's number (6.022 x 10^23).
Avogadro Calculations
Avogadro's Number (NA)
6.02214076 x 10^23 mol^-1
Calculate:
Number of Particles
6.0221e+23
Formulas:
N = n * NA (particles = moles * Avogadro)
n = N / NA (moles = particles / Avogadro)
n = m / M (moles = mass / molar mass)
Calculation:
1 mol * 6.022e23 = 6.0221e+23 particles
What is Avogadro's Number?
Avogadro's number (NA = 6.02214076 x 10^23 mol^-1) is the number of constituent particles (atoms, molecules, ions, or other particles) per mole of a substance. It was named after Italian scientist Amedeo Avogadro. This constant is fundamental to chemistry as it connects the macroscopic world (grams, liters) to the microscopic world (atoms, molecules).
Scale of Avogadro's Number
If you counted atoms...
At 1 billion per second, it would take 19 billion years to count 1 mole
One mole of water
18 grams of water contains 6.022 x 10^23 molecules
Penny stack
A mole of pennies stacked would reach from Earth to the Sun and back 600 billion times
Grains of sand
A mole of sand grains would cover Texas 30 feet deep