Crop Factor Calculator

Calculate the effective focal length of a lens on a crop sensor camera.
The focal length marked on your lens.
Equivalent Focal Length (35mm)

Features

  • Calculate the "effective" focal length of a lens when used on crop sensor cameras.
  • Presets for major camera systems (Nikon, Canon, Sony, MFT, etc.).
  • Custom crop factor input.

How to Use

  1. Enter the focal length of your lens in millimeters (mm).
  2. Select your camera sensor type from the dropdown list.
  3. Read the equivalent 35mm focal length below.