Focal Length & Format Equivalence

From a focal length and format, list the focal lengths that give the same angle of view on other formats.

Diagonal angle of view
46.8°
35mm-equivalent focal length
50mm
FormatSame-AoV focal length (mm)
Micro Four Thirds25
APS-C32.7
35mm full frame50
64580.5
6×691.5
6×7103.5

For the difference between crop and zoom, see this article.