Calculate Lens Focal Length

This calculator will help calculate the lens focal length based on the angle of view or magnification.

Enter the sensor size and if to calculate by angle of view or magnification. The angle of view is based on the diagonal of the sensor.

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Use Full-Frame or APS-C or DX or MFT or CX

Width of the sensor (mm)
Height of the sensor (mm)
angle of view
magnification
Angle of view (°)

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