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Molecular Weight Calculator

Compute the molecular weight (molar mass, g/mol) of a CHON-containing molecule from the number of carbon, hydrogen, oxygen, and nitrogen atoms in its formula, with an optional isotope-correction factor. Useful for routine stoichiometry on organic and biological molecules where C, H, O, and N dominate the elemental composition.

Carbon Atoms (C) (atoms)

Hydrogen Atoms (H) (atoms)

Oxygen Atoms (O) (atoms)

Nitrogen Atoms (N) (atoms)

Isotope Correction

Chemistry

Moles to Grams Calculator

Convert any amount in moles to grams using the substance's molecular weight. Ideal for chemistry students and lab technicians preparing solutions or scaling reactions.

Number of moles (mol)

Molecular weight (g/mol)

Key differences

	Molecular Weight Calculator	Moles to Grams Calculator
Category	Chemistry	Chemistry
Inputs required	5	2
Result	Molecular Weight (g/mol)	Mass (g)
What it does	Compute the molecular weight (molar mass, g/mol) of a CHON-containing molecule from the number of carbon, hydrogen, oxygen, and nitrogen atoms in its formula, with an optional isotope-correction factor. Useful for routine stoichiometry on organic and biological molecules where C, H, O, and N dominate the elemental composition.	Convert any amount in moles to grams using the substance's molecular weight. Ideal for chemistry students and lab technicians preparing solutions or scaling reactions.