Molecular Weight Calculator
Type a chemical formula with brackets or hydrate dots and get its molar mass in g/mol, atoms per unit and each element's mass share, from IUPAC weights.
Stoichiometry and Reactions
5 tools
Which Stoichiometry and Reactions tool do you need?
| Tool | What it answers |
|---|---|
| Grams to Moles | To convert grams to moles, divide the mass by the molar mass: n = m ÷ M. |
| Mole Calculator | The amount of substance in moles is the sample mass divided by its molar mass: n = m ÷ M. |
| Mole Fraction Calculator | Mole fraction is the amount of one component divided by the total amount of every component in the mixture: xA = nA ÷ (nA + nB + …). |
| Mole to Grams | To convert moles to grams, multiply the amount in moles by the substance's molar mass in g/mol. |
| Molecular Weight Calculator | Molecular weight is the sum of every atom's standard atomic weight in the formula. |
All tools
Mole Fraction Calculator
Find the mole fraction and mole percent of each species in a mixture of two to four components from their amounts in moles, with the working shown.
Grams to Moles
Convert grams to moles by typing a chemical formula or a molar mass. Shows molar mass, millimoles and particle count; 18 g of water is 0.9992 mol.
Mole to Grams
Convert moles to grams by multiplying by molar mass. Pick water, NaCl, CO2, glucose and more, or type any molar mass; also shows the particle count.
Mole Calculator
Convert grams to moles, moles to grams, or a particle count to moles using n = m/M and the exact Avogadro constant 6.02214076 × 10^23 per mol.