Compare calculators

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

Golden Hour & Blue Hour Calculator

Find the exact golden hour and blue hour times for any location and date. Photographers use this to plan outdoor shoots when warm, directional light is at its best.

Latitude (°)

Day of Year (day)

Sun Angle for Golden Hour

Time Zone Offset

Fill in the required fields to see your result.

Key differences

	Lens Focal Length Crop Factor Calculator	Golden Hour & Blue Hour Calculator
Category	Photography	Photography
Inputs required	3	4
Result	Equivalent Focal Length (mm)	Golden Hour Start Time (hours)
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.	Find the exact golden hour and blue hour times for any location and date. Photographers use this to plan outdoor shoots when warm, directional light is at its best.