Calculate Exposure | Exif Viewer | Photo Dimensions | Photo Ratio | Image Diagonal
Calculate Image Diagonal
Calculator for the diagonal of photos, films, monitors, or rectangles in general, with same or different units. A diagonal is a straight line between two opposite corners of a rectangle. The image diagonal is a dimension of the image size. It is calculated using Pythagoras' theorem as d =
Please enter two of the three values and select the units you want. Units can be metric or inches. The third value will be calculated.
Example: a photo has a size of 18 x 13 centimeters. Then its diagonal is 222 millimeters long.
The diagonal of a rectangle is the straight line between two opposite corners. A rectangle has two diagonals, both of equal length, which intersect in the center of the rectangle. The diagonal length is the square root of the sum of the squared length and the squared width, according to the Pythagorean theorem mentioned above, which is probably one of the most famous formulas in all of mathematics.
A diagonal is the longest straight line that can be accommodated in a rectangle. To describe the size of a rectangle, usually two values are used: length and width, or, in the case of images, more often width and height. These values clearly define the size. However, if the size of a rectangle should be specified with only one value, for whatever reason, usually the length of the diagonal is chosen. This is often the case with screens or electronic displays. This does lose information; it is no longer known whether the rectangle is more squarish or rather oblong. However, for some purposes, one value is sufficient. The diagonal is also often simply given as an additional value, because the calculation is generally not something that can be done quickly in the head.
German: Fotografische Belichtung berechnen, Exif-Daten auslesen, Bildformat, Bildverhältnis, Bilddiagonale
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