What is after a micrometer?

Answer 1

Well, darling, after a micrometer comes a millimeter. It's like the micrometer's bigger, less precise cousin. So, if you need a measurement that's a bit more rough around the edges, just slide on over to the millimeter. Easy peasy, lemon squeezy.

Answer 2

I will assume you're talking about the units micrometers and not a micrometer as in the measuring instrument.

1 millimeter = 1x10-3 m

1 micrometer = 1x10-6 m

1 nanometer = 1x10-9 m