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Both calculators run independently — change the inputs on either side to compare results.

Lens Focal Length Crop Factor Calculator

Converts a lens's actual focal length to its equivalent focal length on a different sensor size using the crop factor. Use it when switching between full-frame and APS-C or Micro Four Thirds camera systems.

Actual Focal Length (mm)

Current Camera Sensor

Target Camera Sensor

Fill in the required fields to see your result.

Photography

Print Size Resolution Calculator

Calculates the uncompressed file size in megabytes required to print an image at a given size, DPI, and color depth. Use it to verify your camera file has enough resolution before sending a print to a lab.

Print Width (inches)

Print Height (inches)

Print Quality (DPI)

Color Depth

Fill in the required fields to see your result.

Key differences

	Lens Focal Length Crop Factor Calculator	Print Size Resolution Calculator
Category	Photography	Photography
Inputs required	3	4
Result	Equivalent Focal Length (mm)	Required File Size (MB)
What it does	Converts a lens's actual focal length to its equivalent focal length on a different sensor size using the crop factor. Use it when switching between full-frame and APS-C or Micro Four Thirds camera systems.	Calculates the uncompressed file size in megabytes required to print an image at a given size, DPI, and color depth. Use it to verify your camera file has enough resolution before sending a print to a lab.