A mole is a chemistry unit representing 6.022 × 10²³ particles — the bridge between the atomic scale and measurable quantities in the lab. Enter a value in Moles to find the Number of Particles (atoms, molecules, or ions), or enter a known particle count to convert back to moles using Avogadro's Number.
Number of Particles
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Number of Moles
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Avogadro's Number
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Avogadro's number is 6.02214076 × 10²³, which represents the number of particles (atoms, molecules, or ions) in one mole of any substance. It's a fundamental constant in chemistry.
To convert moles to particles, multiply the number of moles by Avogadro's number (6.022 × 10²³). The formula is: Particles = Moles × 6.022 × 10²³
To convert particles to moles, divide the number of particles by Avogadro's number. The formula is: Moles = Particles ÷ 6.022 × 10²³
Yes, you can enter numbers in scientific notation format (e.g., 1.2e23 for 1.2 × 10²³). This is especially useful when dealing with very large numbers of particles.
This calculator works for any type of particle including atoms, molecules, ions, formula units, or any other discrete chemical entities. One mole always contains the same number of particles regardless of the type.
The mole bridges the microscopic world of atoms and molecules with the macroscopic world we can measure. It allows chemists to count particles by weighing, making stoichiometric calculations possible.
In 0.5 moles, there are 3.011 × 10²³ particles. This is calculated by multiplying 0.5 by Avogadro's number (6.022 × 10²³).