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Mole Calculator

Convert between grams, moles and particles for any substance.

  • Free
  • No sign-up
  • Nothing is sent or stored
Convert
g

Result

Amount of substance
1.99833 mol
Molar mass
18.015 g/mol
Particles
1.20343 × 10^24
How it was calculated
  1. n = m ÷ M = 36 ÷ 18.015

The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved.

How to use the Mole Calculator

  1. Choose the conversion.
  2. Type the formula so the molar mass can be calculated.
  3. Enter the amount and read the result.

What does this tool do?

A mole is a fixed number of particles — 6.022 × 10²³, Avogadro's constant. Converting grams to moles means dividing by the molar mass: 36 g of water is 36 ÷ 18.015 ≈ 2 mol.

The molar mass is worked out from the formula you type, so there's nothing to look up.

Why use it?

  • Molar mass calculated for you.
  • Particle counts included.
  • Three conversions.

The formula

n = m ÷ M
N = n × Nₐ

Privacy

The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved. There's no account to create and nothing to install.

Last reviewed by the M2Toolkit team.

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