The mole is the SI unit for the amount of a substance, and lab results often use its smaller multiples: millimoles (mmol), micromoles (µmol), nanomoles (nmol), picomoles (pmol) and femtomoles (fmol). Each unit is a power of ten away from the next, so converting between them only means multiplying or dividing by 1,000 for every step. Pick a pair below to open its converter, table and worked examples.
Converters in This Group
From mol (mole)
- mol to mmol× 1,000
- mol to µmol× 1,000,000
- mol to nmol× 1,000,000,000
- mol to pmol× 10¹²
From mmol (millimole)
- mmol to mol÷ 1,000
- mmol to µmol× 1,000
- mmol to nmol× 1,000,000
- mmol to pmol× 1,000,000,000
From µmol (micromole)
- µmol to mol÷ 1,000,000
- µmol to mmol÷ 1,000
- µmol to nmol× 1,000
- µmol to pmol× 1,000,000
From nmol (nanomole)
- nmol to mol÷ 1,000,000,000
- nmol to mmol÷ 1,000,000
- nmol to µmol÷ 1,000
- nmol to pmol× 1,000
- nmol to fmol× 1,000,000
From pmol (picomole)
- pmol to mol÷ 10¹²
- pmol to mmol÷ 1,000,000,000
- pmol to µmol÷ 1,000,000
- pmol to nmol÷ 1,000
- pmol to fmol× 1,000
From fmol (femtomole)
- fmol to nmol÷ 1,000,000
- fmol to pmol÷ 1,000
Unit Reference
| Unit | Name | Equals |
|---|---|---|
| mol | Mole | 1 mol = 1 mol |
| mmol | Millimole | 1 mmol = 0.001 mol |
| µmol | Micromole | 1 µmol = 0.000001 mol |
| nmol | Nanomole | 1 nmol = 1 × 10⁻⁹ mol |
| pmol | Picomole | 1 pmol = 1 × 10⁻¹² mol |
| fmol | Femtomole | 1 fmol = 1 × 10⁻¹⁵ mol |
How These Conversions Work
To move to a smaller unit, multiply by 1,000 for each step down the list: mol, mmol, µmol, nmol, pmol, fmol. To move to a larger unit, divide by 1,000 for each step. For example, 2 mmol = 2,000 µmol, and 3,000 nmol = 3 µmol.
More Converters
Looking for a different kind of unit? Try the molar concentration converters, moles to mass converters and mass concentration converters. You can also browse all lab converters or open the mmol/L to mg/dL conversion charts.
These tools convert units only and do not give medical advice. Read our editorial policy.