A simple calculator to determine an image's focal length in pixels based on recorded camera data, lens info, and plate info

focalc.py

imgWidthPx = float(input("Image width in pixels: "))

sensorWidth = float(input("Sensor width in mm: "))

focalLen = float(input("Lens focal length in mm: "))

focalLenPx = str(float(float(focalLen / sensorWidth) * imgWidthPx))

print("The focal length in pixels is: " + focalLenPx)