Calculatorism

Focal from AoV

Compute focal length = width / (2·tan(AoV/2)) from angle of view and sensor width.

Input Data

Input Angle of view.
°
Input Sensor width.
mm

Results

50.0025mm
Focal = width / (2·tan(AoV/2)).

At a glance:Focal from AoV: enter parameters to compute results; complements related calculators.

Formula

Focal = width / (2·tan(AoV / 2)).

How to Use

  1. Enter AoV, sensor width.
  2. It returns focal length.

Case Studies

39.6°, FF → 50mm

AoV and focal are inverse.

FAQ

Lens pick?

Decide framing AoV, then invert to pick focal.

Related Tools

References

Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Focal from AoV（/photography/focal-from-fov）。