I would say to PDF it. And make sure to print "Actual Size".
You can get measurements from cards and the like for the actual sizes, but the best way to print in a standardized size is to make sure it's the right size on your computer, and then get that file into PDF format. Printers like PDF better than say, .jpg or. png for printing accurately. If you tell the computer to print a .jpg, it'll give you options for printing full page to wallet size. With PDF, it just prints out at the appropriate size.
You can get measurements from cards and the like for the actual sizes, but the best way to print in a standardized size is to make sure it's the right size on your computer, and then get that file into PDF format. Printers like PDF better than say, .jpg or. png for printing accurately. If you tell the computer to print a .jpg, it'll give you options for printing full page to wallet size. With PDF, it just prints out at the appropriate size.