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Convert Micromoles to Millimoles

1 micromole = 0.001 millimoles. Multiply the number of micromoles by 0.001.

Result
0.001

1 µmol = 0.001 mmol

Multiply the number of micromoles by 0.001.

Results are rounded for display. Double-check values for critical work.

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Micromoles to Millimoles table

MicromolesMillimoles
1 µmol0.001 mmol
2 µmol0.002 mmol
3 µmol0.003 mmol
4 µmol0.004 mmol
5 µmol0.005 mmol
10 µmol0.01 mmol
20 µmol0.02 mmol
25 µmol0.025 mmol
50 µmol0.05 mmol
100 µmol0.1 mmol
500 µmol0.5 mmol
1000 µmol1 mmol

About these units

The micromole (µmol) is a metric unit of amount of substance, equal to 0.000001 moles.

The millimole (mmol) is a metric unit of amount of substance, equal to 0.001 moles.

Going the other way, 1 millimole = 1,000 micromoles. The mole is the chemist's counting unit — 6.02214076 × 10²³ entities. Convert between mole prefixes and the engineering pound-mole.

Frequently asked

How many millimoles are in a micromole?
1 micromole = 0.001 millimoles.
How do you convert micromoles to millimoles?
Multiply the number of micromoles by 0.001.
What is 10 µmol in mmol?
10 µmol = 0.01 mmol.

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