Lens focal length to diagonal angle of view
Type a value in mm to get it in ° diagonal instantly.
63.44° diagonal
That's 1.35× as long as a phone’s main camera, while a normal lens is 1.43× longer.
Convert the other way: ° diagonal to mm
What it means
How wide does it see?
Angles are for a rectilinear lens focused at infinity on a 3:2 frame. Fisheye lenses and close focusing change them.
The math
How to convert mm to ° diagonal
Angle of view is 2 × arctan(d ÷ 2f), with d the frame’s width, height or diagonal (36, 24 or 43.3 mm for full frame) and f the 35 mm-equivalent focal length.
Example: 35 mm = 63.44 ° diagonal.
Lens focal lengths below are for Full frame (crop 1). Change it above and they update.
Every unit
Your lens in every unit
Tables
mm to ° diagonal conversion table
| mm | ° diagonal |
|---|---|
| 10 mm | 130.383 ° diagonal |
| 14 mm | 114.182 ° diagonal |
| 16 mm | 107.027 ° diagonal |
| 18 mm | 100.476 ° diagonal |
| 24 mm | 84.0622 ° diagonal |
| 28 mm | 75.3806 ° diagonal |
| 35 mm | 63.44 ° diagonal |
| 50 mm | 46.793 ° diagonal |
| 85 mm | 28.5583 ° diagonal |
| 105 mm | 23.2837 ° diagonal |
| 135 mm | 18.2081 ° diagonal |
| 200 mm | 12.347 ° diagonal |
| 300 mm | 8.24904 ° diagonal |
| 600 mm | 4.12987 ° diagonal |
° diagonal to mm conversion table
| ° diagonal | mm |
|---|---|
| 4.13 ° diagonal | 599.981 mm |
| 8.25 ° diagonal | 299.965 mm |
| 12.3 ° diagonal | 200.77 mm |
| 18.2 ° diagonal | 135.061 mm |
| 23.3 ° diagonal | 104.924 mm |
| 28.6 ° diagonal | 84.8708 mm |
| 46.8 ° diagonal | 49.9916 mm |
| 63.4 ° diagonal | 35.0273 mm |
| 75.4 ° diagonal | 27.9902 mm |
| 84.1 ° diagonal | 23.9841 mm |
| 100 ° diagonal | 18.1525 mm |
| 107 ° diagonal | 16.0078 mm |
| 114 ° diagonal | 14.0488 mm |
| 130 ° diagonal | 10.0878 mm |
Quick answers
Quick answers
- How many ° diagonal is 1 mm?
- 1 mm is 174.707 ° diagonal.
- How many ° diagonal is 10 mm?
- 10 mm is 130.383 ° diagonal.
- How many ° diagonal is 35 mm?
- 35 mm is 63.44 ° diagonal.
The units
About these units
Lens focal length (mm)
The number printed on the lens, for the sensor chosen above.
Diagonal angle of view (° diagonal)
How lens makers quote angle of view.
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