You can see which resolution you should use in your images for specific screen frequency, pixel dimension of the picture and document size in specific resolution and in any color depth.
You can drag a picture file on the Resolution Calculator window and the program will show the width and height of the picture in pixels.
You can enter the dimensions of the image in pixels or enter the number of megapixels and aspect ratio of the image. The program calculates the the horizontal and vertical sizes of the image.
Fields for calculating the printed size of the digital photographs.
English, French and Finnish localizations.
Freeware
Resolution Calculator 3.7
MacOS X 10.11.–