How many inches is 2.5 millimeters?

2.5 inches = 63.5 mm since 1 inch = 25.4 mm

You can do the conversion by using the converter I linked below A search in google will also give the same result.

Search: 2.5 inch in mm google will give you:

Read more about the calculator.

Search link: google.nl/search?q=2.5+inch+in+mm">http://www.google.nl/search?q=2.5+inch+in+mm