Kinematic Viscosity Unit Converter in Excel

From To

1.000000E-006

Add-in Formula =PO.UnitConverter(1, "cSt", "m2/s")

Excel Lambda

=LAMBDA(x,
  LET(
    ratio, 1E-06,
    x * ratio
  )
)(1)

Category Lambda

=LAMBDA(x, from, to,
  LET(
    f, SWITCH(from,
      "m2/s", 1,
      "St", 0.0001,
      "cSt", 1E-06),
    t, SWITCH(to,
      "m2/s", 1,
      "St", 0.0001,
      "cSt", 1E-06),
    x * f / t
  )
)(1, "cSt", "m2/s")

How to save as a reusable Excel function

LAMBDA is a built-in Excel feature (Microsoft 365) that lets you create custom functions without VBA. The formulas above work as-is when pasted into a cell.

To save a LAMBDA as a reusable named function:

Go to Formulas → Name Manager → New
Enter a name, e.g. ConvertKinematicViscosity
In Refers to, paste the LAMBDA formula without the trailing invocation (...)
Click OK

Now use =ConvertKinematicViscosity(1, "cSt", "m2/s") anywhere in your workbook — no add-in required.

Conversion Factors (base: m2/s)

Unit	Name	Factor
m2/s	square metre per second	1
St	stokes	0.0001
cSt	centistokes	1E-06