There are 25400 micrometers in an inch.
1 Inch = 25 400 Micrometers
1 Micrometer = 0.0000393700787 Inches
Inch is an imperial and US Customary length unit. The abbreviation is "in" and also the symbol is a double prime (").
Micrometer is a metric length unit and usually used for precise measurement of small distances in engineering and machining. The abbreviation is "µm".