Molar Mass Converter
Convert molar mass among g/mol, kg/mol, and mg/mol by changing SI prefixes.
How to use
- Enter an already-known molar-mass value and choose two prefix scales from g/mol, kg/mol, and mg/mol.
Capabilities and scope
Express the same mass per mole in grams, kilograms, or milligrams per mole.
How it works
g/mol is the reference with kg/mol=1000 g/mol and mg/mol=0.001 g/mol.
Example
18.015 g/mol is 0.018015 kg/mol or 18,015 mg/mol.
Useful for
- Align chemical data reported in kg/mol and g/mol
- Express small molar-mass values in mg/mol
- Normalize units across datasets
Before you use it
- It does not calculate molar mass from a chemical formula or look up atomic weights; it only rescales an existing molar-mass value.
Standards and references
Frequently asked questions
Will it calculate the molar mass of H₂O?
No. It is a numeric unit converter, not a chemical-formula parser.