MIKE'S CUSTOM PHOTO SIZE CALCULATOR™
Mike's JavaScript Custom Photo Size Calculator™ can be used to calculate the
reduction percentage of an input photo to produce a custom size print
whose width or length has an exact pre-determined fixed size.
Note: Although this app was created for and used successfully on a Noritsu photo printer, it can also be used in Adobe Photoshop by importing the photo to the input size document and reducing its size by the percentage indicated, using Edit > Transform > Scale.