Skip to content
ScienceQuest

Amount of substance conversion

4 units, with mol as the base. Every value in the factor table is the number you multiply by, so reading across a row converts out of that unit and reading down a column converts into it.

Factor table

Amount of substance conversion factors. Each cell is the value to multiply the row unit by to get the column unit.
from \ to nmolµmolmmolmol
nmol 1 0.001 1 × 10⁻⁶ 1 × 10⁻⁹
µmol 1000 1 0.001 1 × 10⁻⁶
mmol 1 × 10⁶ 1000 1 0.001
mol 1 × 10⁹ 1 × 10⁶ 1000 1

Prefixes such as milli, micro and kilo follow the SI prefixes table.

The values are facts and free to use; this table’s selection and presentation are © 2026 ScienceQuest.

Worked example

  1. 1 mmol in mol
  2. = 1 × 0.001
  3. = 0.001 mol

Convert a number

The table gives the factor; the unit converter does the arithmetic, remembers the units you picked, and turns any conversion into a link you can share.

Calculators that use amount of substance

Other quantities