‎Mole calculator online

Mole Calculator

Calculate the number of moles using the formula n = m/M

n = m / M

Mass (m) in grams:

Molar Mass (M) in g/mol:

Try these examples:

Water (18g, 18g/mol)

Salt (58.44g, 58.44g/mol)

Glucose (100g, 180g/mol)

NaOH (40g, 40g/mol)

Results

Number of Moles (n):

-

mol

Calculation Steps

Enter values to see the calculation steps

About Mole Calculations

The mole (symbol: mol) is the unit of measurement for amount of substance in the International System of Units (SI). One mole contains exactly 6.02214076×10²³ elementary entities (atoms, molecules, ions, or other particles).

Formula Explanation

n = m / M

Where:
n = number of moles (mol)
m = mass of substance (g)
M = molar mass (g/mol)

Important Notes

• Mass must be in grams

• Molar mass must be in g/mol

• The result is in moles (mol)

• This calculation is fundamental in stoichiometry

Applications

Mole calculations are essential in chemistry for:

• Stoichiometric calculations

• Preparing solutions

• Determining reaction yields

• Analytical chemistry