Focal Length Equivalent Calculator
Convert to Full Frame Equivalent
Find the 35mm equivalent focal length
Convert Between Sensors
Find the equivalent focal length on a different sensor
Formula
35mm Equivalent = Focal Length × Crop Factor | Target FL = (Source FL × Source Crop) / Target Crop
Frequently Asked Questions
What is 35mm equivalent focal length?
The 35mm equivalent is the focal length that would give the same field of view on a full-frame (35mm) camera. It standardizes focal lengths across different sensor sizes for comparison.
Why does sensor size matter for focal length?
A smaller sensor captures a smaller portion of the image circle, effectively cropping the image. This makes the field of view narrower, similar to using a longer lens on a larger sensor.
What focal length equals the human eye?
The human eye's field of view is roughly equivalent to a 43mm lens on full frame, though 50mm is traditionally called the 'normal' lens. On APS-C, a 35mm lens is approximately equivalent.
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