Mole Calculator

Your details

Pick the route that matches the data you have in hand.
Which of the three quantities do you want to find?
The sample mass. Switch units with the dropdown.
Molar mass of the substance, e.g. 58.44 g/mol for NaCl.
g/mol
Total count of atoms, molecules, ions, or formula units.
Concentration of the solution in mol per litre (M).
mol/L
Volume of the solution.
Gas pressure.
Volume occupied by the gas.
Temperature in Kelvin. 0 °C = 273.15 K; 25 °C = 298.15 K.
K
Result
1
Number of particles602,214,076,000,000,000,000,000entities
Mass in grams58.44g

The sample contains 1 mol.

  • The mole equation n = m / M links a weighable mass to an amount of substance via molar mass.
  • Molar mass in g/mol is numerically equal to the relative formula mass in atomic mass units.
  • One mole always contains exactly 6.02214076 × 10²³ entities, the Avogadro constant.

Next stepDissolving this in a known volume? Use the solution mode above (or the molarity calculator) to find concentration.

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