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Calculation Machine

Molar Mass Calculator

Grams per mole and mole conversions.

Reviewed by the Calculation Machine team · How we check our maths

Your values

ⓘ Live results

Results
Moles
0.4278
Particles
2.5762e+23
Mass per mole
58.44 g/mol
Mass for 1 mole
58.44 g

Quick answer

Molar mass converts between the mass of a substance and the number of moles.

The formula

moles = mass ÷ molar mass

Worked example

Worked example

Using the values the calculator loads with.

Inputs

  • Mass25 g
  • Molar mass58.44 g/mol

Result

  • Moles0.4278
  • Particles2.5762e+23
  • Mass per mole58.44 g/mol
  • Mass for 1 mole58.44 g

How to use the Molar Mass Calculator

  1. 1Enter the mass of your sample.
  2. 2Enter the compound's molar mass.
  3. 3Read moles and particle count.

Frequently asked questions

What is the molar mass of NaCl?

58.44 g/mol.

What is Avogadro's number?

6.022 × 10²³ particles per mole.

About this calculator