Convert micromolars to millimolars
1 µM = 0.001 mM — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.001mM
As a fraction: 1/1000
More converter tools
Readable results
Ranges, ± tolerances, feet/inches and clock durations work in the value field.
Unit picker
Export this result
1 µM = 0.001 mM
Show this value in all 10 molar concentration units
- Mole per cubic meters mol/m³ 0.001
- Molars M 0.000 001
- Millimolars mM 0.001
- Micromolars µM 1
- Nanomolars nM 1000
- Picomolars pM 1 000 000
- Femtomolars fM 1 000 000 000
- Mole per liters mol/L 0.000 001
- Millimole per cubic meters mmol/m³ 1
- Mole per cubic decimeters mol/dm³ 0.000 001
Every row is Micromolar (µM) converted through the mole per cubic meter, in exact rational arithmetic.
How to convert micromolars to millimolars
Multiply the number of micromolars by 0.001 to get millimolars.
The exact factor is 0.001 — as a fraction, 1/1000.
Micromolar to Millimolar conversion table
| Micromolars (µM) | Millimolars (mM) |
|---|---|
| 1 µM | 0.001 |
| 2 µM | 0.002 |
| 3 µM | 0.003 |
| 5 µM | 0.005 |
| 10 µM | 0.01 |
| 20 µM | 0.02 |
| 25 µM | 0.025 |
| 50 µM | 0.05 |
| 100 µM | 0.1 |
| 250 µM | 0.25 |
| 500 µM | 0.5 |
| 1000 µM | 1 |
Millimolar to Micromolar conversion table
| Millimolars (mM) | Micromolars (µM) |
|---|---|
| 1 mM | 1000 |
| 2 mM | 2000 |
| 3 mM | 3000 |
| 5 mM | 5000 |
| 10 mM | 10 000 |
| 20 mM | 20 000 |
| 25 mM | 25 000 |
| 50 mM | 50 000 |
| 100 mM | 100 000 |
| 250 mM | 250 000 |
| 500 mM | 500 000 |
| 1000 mM | 1 000 000 |
Frequently asked
How many millimolars are in a micromolar?
One micromolar equals 0.001 millimolars (µM → mM). That figure is exact, not rounded.
How do you convert micromolars to millimolars?
Multiply the number of micromolars by 0.001 to get millimolars.
What is 1 mM in micromolars?
One millimolar is 1000 micromolars.
What is 10 µM in mM?
10 µM = 0.01 mM.