640 mM to mol/L

640 mM = 0.64 mol/L

mMmol/L
625 mM0.625
630 mM0.63
635 mM0.635
6400.64
645 mM0.645
650 mM0.65
655 mM0.655

640 mM = 0.64 mol/L

Formula

1 mol/L = 1,000 mM (millimolar) · 1 mM = 0.001 mol/L