convertimate Osmolarity

Milliosmoles per liter to millimolar

Type a value in mOsm/L to get it in mM instantly.

150mM

That's about the same as a hypotonic solution. That is hypotonic: cells placed in it would swell.

What it means

How concentrated is that?

Real salts do not dissociate perfectly, so measured osmolarity runs a few percent below the ideal figure. The osmotic coefficient of saline is about 0.93.

The math

How to convert mOsm/L to mM

Osmosis counts particles: mOsm/L = mmol/L × particles per molecule. The figures below use the solute selected above.

Example: 150 mOsm/L = 150 mM.

The table below is for Glucose (1 particle).

Every unit

Your osmolarity in every unit

Tables

mOsm/L to mM conversion table

mOsm/L to mM conversion table
mOsm/LmM
10 mOsm/L10 mM
25 mOsm/L25 mM
50 mOsm/L50 mM
100 mOsm/L100 mM
150 mOsm/L150 mM
200 mOsm/L200 mM
280 mOsm/L280 mM
300 mOsm/L300 mM
500 mOsm/L500 mM
1,000 mOsm/L1,000 mM
2,000 mOsm/L2,000 mM
mM to mOsm/L conversion table
mM to mOsm/L conversion table
mMmOsm/L
10 mM10 mOsm/L
25 mM25 mOsm/L
50 mM50 mOsm/L
100 mM100 mOsm/L
150 mM150 mOsm/L
200 mM200 mOsm/L
280 mM280 mOsm/L
300 mM300 mOsm/L
500 mM500 mOsm/L
1,000 mM1,000 mOsm/L
2,000 mM2,000 mOsm/L

Quick answers

Quick answers

How many mM is 1 mOsm/L?
1 mOsm/L is 1 mM.
How many mM is 10 mOsm/L?
10 mOsm/L is 10 mM.
How many mM is 150 mOsm/L?
150 mOsm/L is 150 mM.

The units

About these units

Milliosmoles per liter (mOsm/L)

The clinical standard. Plasma is about 290 of them.

Millimolar (mM)

Millimoles per liter, before counting the particles each one splits into.

Learn more about osmolarity units

Keep going

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