Mole Conversions
Convert between grams, moles, and volume. Answers accepted within ±1%.
Common Questions
What is a mole?
A mole is 6.022 × 10²³ particles (Avogadro's number). It is the bridge between the atomic scale and the laboratory scale, allowing chemists to count atoms and molecules by weighing them.
How do you convert grams to moles?
Divide the mass in grams by the molar mass (g/mol) of the substance. Moles = grams ÷ molar mass. The molar mass is the sum of atomic masses of all atoms in the formula.
How do you convert moles to grams?
Multiply the number of moles by the molar mass (g/mol). Grams = moles × molar mass. This tells you how much a given number of moles of a substance weighs.
What is molar mass and how do you calculate it?
Molar mass is the mass of one mole of a substance, in grams per mole (g/mol). Add up the atomic masses of every atom in the chemical formula. For example, H2O: 2(1.008) + 16.00 = 18.02 g/mol.