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.
- Lens A: 52.5mm
- Lens B: 56mm
Sony α6000 series, Nikon Z50/Zfc, Fujifilm X-series
Canon EOS R7, R10, R50, EOS M
Where your lenses land
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.