Molar concentration tells you how many moles of a substance are dissolved in one liter. Common units are mol/L (also written M), mmol/L, µmol/L, nmol/L and pmol/L, and each is a power of ten away from the next, so converting 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/L (mole per liter)
- mol/L to mmol/L× 1,000
- mol/L to µmol/L× 1,000,000
- mol/L to nmol/L× 1,000,000,000
- mol/L to pmol/L× 10¹²
From mmol/L (millimole per liter)
- mmol/L to mol/L÷ 1,000
- mmol/L to µmol/L× 1,000
- mmol/L to nmol/L× 1,000,000
- mmol/L to pmol/L× 1,000,000,000
From µmol/L (micromole per liter)
- µmol/L to mol/L÷ 1,000,000
- µmol/L to mmol/L÷ 1,000
- µmol/L to nmol/L× 1,000
- µmol/L to pmol/L× 1,000,000
From nmol/L (nanomole per liter)
- nmol/L to mol/L÷ 1,000,000,000
- nmol/L to mmol/L÷ 1,000,000
- nmol/L to µmol/L÷ 1,000
- nmol/L to pmol/L× 1,000
From pmol/L (picomole per liter)
- pmol/L to mol/L÷ 10¹²
- pmol/L to mmol/L÷ 1,000,000,000
- pmol/L to µmol/L÷ 1,000,000
- pmol/L to nmol/L÷ 1,000
Unit Reference
| Unit | Name | Equals |
|---|---|---|
| mol/L | Mole per liter | 1 mol/L = 1 mol/L |
| mmol/L | Millimole per liter | 1 mmol/L = 0.001 mol/L |
| µmol/L | Micromole per liter | 1 µmol/L = 0.000001 mol/L |
| nmol/L | Nanomole per liter | 1 nmol/L = 1 × 10⁻⁹ mol/L |
| pmol/L | Picomole per liter | 1 pmol/L = 1 × 10⁻¹² mol/L |
How These Conversions Work
To move to a smaller unit, multiply by 1,000 for each step down the list: mol/L, mmol/L, µmol/L, nmol/L, pmol/L. To move to a larger unit, divide by 1,000 for each step. For example, 5 mmol/L = 5,000 µmol/L, and 2,500 nmol/L = 2.5 µmol/L.
More Converters
Looking for a different kind of unit? Try the molar amount 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.