Mole Calculator

If you have a substance in kilogram, ounce, or any unit of weight and want to find out the moles present in it, you can use our mole calculator.

What is a Mole?

Mole is one of the SI units (International System of Units) used to determine the amount of a chemical substance.


the substance can be an atom, electrons, ions, or molecules.

It is better to know the amount of substance present in any chemical reaction in order to balance the reactants and the products. 


According to the standards, one mole of a chemical substance contains 6.02214076×10^23 (Avogadro's constant) number of particles. 



The symbol used to represent mole is mol.

Mole Calculator Formula

To find out how to calculate the value of mole, you can use our mole calculator or a formula listed below:

Mole = mass / molecular weight

To know more about Molecular weight/Molar Mass of gas


For a more precise understanding, let us have an example below:

Suppose we have 10g Hydrogen chloride (HCl), and its molecular weight is 36.5 g / mol. Now find out the total number of molecules present in HCl.


We will find the total number of molecules present in HCl using the formula of moles listed above.

Given data

Mass = 10 g
Molecular weight= 36.5 g / mol

To find

The total number of HCl molecules=?
Mole = mass / molecular weight

Putting values

Mole = 10 / 36.5 = 0.27 moles = 1.626 * 1023 HCl molecules

Calculator use

To instantly find out the moles present in the substance, use our mole calculator. In order to get the answers, you have to put the values for the mass of the substance and the molecular mass of that substance. Place the values and the answer will be on your screen!