Convert 4 Inch (US survey) to Mil: 4 Inch (US survey) in Mil
This calculator allows you to convert from Inch (US survey) to Mil and in a reverse direction. To convert from Inch (US survey) to Mil, enter the amount of Inch (US survey) into the first input and to convert from Mil to Inch (US survey), enter the amount of Mil into the second input.
Every 1 Inch (US survey) = 1000.002000004 Mil
and so, 4 Inch (US survey) = 4 multiplied by 1000.002000004 = 4000.0080000161 Mil.
Mil
What is mil?
Mil or Thou is a unit of length which equals one thousandth of an inch. The thickness of different materials in U.S is measured in mils. The thickness of ID cards is about 30 mils.
It is important to differentiate between mill and millimeter which is 0.001 meter.
The following examples can help you to totally understand the size of mil: