Mole Calculator

Universal mole converter β€” convert between grams, atoms/molecules, and liters (at STP) using Avogadro's number and molar mass.

g
g/mol

MOLES

0.9992 mol

GRAMS (if Hβ‚‚O)

18 g

ATOMS

6.0171e+23

LITERS (STP)

22.3953 L

πŸ’‘ How to Use the Mole Calculator

The Mole: Central Concept of Chemistry

The mole is the SI unit for measuring the "amount of substance." It connects three fundamental scales used in chemistry: counting particles (atoms or molecules), weighing substances (grams), and measuring gas volumes (liters).

Key Mole Relationships

1 mole = 6.022 Γ— 10Β²Β³ particles
1 mole = molar mass in grams
1 mole of gas = 22.414 L at STP

Converting Between Units

To convert grams to moles, divide by the molar mass. To convert atoms to moles, divide by Avogadro's number. To convert liters of gas at STP to moles, divide by 22.414.

This calculator performs all of these conversions in one tool. Enter any known value and it will calculate the others. Use the result in molarity, theoretical yield, or percent yield calculations.

πŸ”— Related Calculators

Grams to Moles CalculatorConvert grams to moles using molar mass. Enter mass and molar mass to calculate moles, atoms, and molecules.Atoms to Moles CalculatorConvert atoms or molecules to moles using Avogadro's number (6.022 Γ— 10Β²Β³). Enter the number of particles to find moles.Liters to Moles CalculatorConvert liters of gas to moles at STP (22.414 L/mol) or custom temperature and pressure using the ideal gas law PV = nRT.Molar Mass CalculatorCalculate molar mass (g/mol) from mass and moles. Reference table of common elements and compounds included.