Field of View Calculator

Enter focal length and sensor size. Get horizontal, vertical, and diagonal angles of view, plus equivalent focal lengths across all sensor formats.

Focal Length

50mm

8mm50mm600mm

Sensor format

Horizontal FOV

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Vertical FOV

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Diagonal FOV

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FF Equivalent

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Crop Factor

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Character

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Equivalent focal lengths across sensor formats

SensorFocal LengthCrop FactorFOV (H)

// field of view

Field of view is the angular extent of the scene captured by a lens. A wider FOV captures more of the scene (wide angle), a narrower FOV shows less but magnifies it (telephoto).

The crop factor is the ratio of the Full Frame sensor diagonal to your sensor's diagonal. APS-C Nikon = 1.5×, APS-C Canon = 1.6×, M4/3 = 2×. A 50mm lens on an APS-C body has the same FOV as a 75mm lens on Full Frame.

FOV formula: FOV = 2 × arctan(sensor_dimension / (2 × focal_length))