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Amount of substance converter

Convert amount of substance, particles and molar-amount conventions. Use the interactive converter to enter your own value and select any supported pair in this family.

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Use the interactive converter to enter your own value and select any supported pair in this family.

Supported units (11)

Each row links to the live converter. The factor column uses the family’s stated base unit for linear families; for specialized reciprocal or numeral systems, use the live converter and the family-specific explanation.

Source unit	Factor to base unit	Tool
mole `mol`	1	Convert this unit ↗
millimole `mmol`	0.001	Convert this unit ↗
micromole `umol`	1e-06	Convert this unit ↗
nanomole `nmol`	1e-09	Convert this unit ↗
picomole `pmol`	1e-12	Convert this unit ↗
kilomole `kmol`	1000	Convert this unit ↗
pound-mole `lbmol`	453.59237	Convert this unit ↗
molecule `molecule`	1.660539067e-24	Convert this unit ↗
million molecules `mmolecule`	1.660539067e-18	Convert this unit ↗
atom `atom`	1.660539067e-24	Convert this unit ↗
entity (particle) `particle`	1.660539067e-24	Convert this unit ↗

Important note

Unit standards, historical definitions and approximations can vary. Cooking volume-to-mass conversions depend on the ingredient; currencies require an exchange rate; sizing systems may be discrete; and logarithmic quantities such as decibels need purpose-built formulas rather than a linear scale.

For laboratory, medical, aviation, engineering or other safety-critical work, verify the definitions and standards that apply to your use case.