How many square microinch in 1 square mil?
The answer is 1000000.
We assume you are converting between square microinch and square mil.
You can view more details on each measurement unit: square microinch or
square mil
The SI derived unit for area is the square meter.
1 square meter is equal to 1.5500031000062E+15 square microinch, or 1550003100.0062 square mil.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between square microinches and square mil.
Type in your own numbers in the form to convert the units!

A square mil is defined as the area of a square
with sides one mil in length.

The definition of a mil is as follows:

A milliradian, often called a mil or mrad, is an SI derived unit for angular measurement which is defined as a thousandth of a radian (0.001 radian).

Compass use of mils typically rounds 6283 to 6400 for simplification, but here we use the official definition.

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