APS-C Focal Length Calculator
Enter a lens focal length to see its full-frame equivalent on an APS-C camera. The calculator is preset to compare the 1.5× crop used by Nikon, Sony and Fujifilm with Canon's 1.6× APS-C crop.
Compare 1.5× and 1.6× APS-C
Change any focal length or crop factor to compare the resulting field of view.
Sony α6000 series, Nikon Z50/Zfc, Fujifilm X-series
Canon EOS R7, R10, R50, EOS M
Where your lenses land
Typical scene ranges are guides, not requirements.
How the conversion works
Multiply the focal length printed on the lens by your camera's crop factor. Most Nikon, Sony and Fujifilm APS-C cameras use 1.5×, while Canon APS-C cameras use 1.6×.
The result is a full-frame-equivalent field of view, not a change to the lens itself. A 35mm lens remains a 35mm lens; the smaller sensor records a narrower portion of its image circle.
Lens focal length × APS-C crop factor = full-frame-equivalent focal length
Focal length conversion table
| Lens focal length | Nikon/Sony/Fujifilm 1.5× | Canon 1.6× |
|---|---|---|
| 16mm | 24mm | 25.6mm |
| 24mm | 36mm | 38.4mm |
| 35mm | 52.5mm | 56mm |
| 50mm | 75mm | 80mm |
| 85mm | 127.5mm | 136mm |
| 200mm | 300mm | 320mm |
Values are field-of-view equivalents relative to a full-frame camera. Decimal results are shown where the conversion is not a whole number.
Worked example: a 35mm lens on APS-C
A 35mm lens on a Nikon, Sony or Fujifilm APS-C body gives a field of view similar to 52.5mm on full frame (35 × 1.5). On a Canon APS-C body it is similar to 56mm (35 × 1.6). That small difference can matter when matching framing across camera systems.