Focal Length Calculator

Find the 35mm-equivalent focal length.

35mm equivalent 52.5

Formula: equivalent = focal length * crop factor

Step-by-step with your numbers:

1. Values used:

2. Actual focal length = 35

3. Crop factor = 1.5

5. 35mm equivalent = Actual focal length x Crop factor = 35 x 1.5 = 52.5

Did we solve your problem today?

Crop sensors make a lens behave like a longer one; this finds the equivalent.

The math behind it

equivalent focal length = actual x crop factor. APS-C is about 1.5x, Micro Four Thirds 2x.

A 35 mm lens on a 1.5x crop sensor behaves like 52.5 mm.

Does it change the actual focal length?

No - only the angle of view; the lens itself is unchanged.