Free Space Path Loss Calculator
Free Space Path Loss
Calculate free space path loss in dB for a given distance.
Formula
FSPL (dB) = 20 log10(d) + 20 log10(f) + 32.44
Frequently Asked Questions
What is free space path loss?
It is the signal attenuation over distance in open air with no obstacles.
Does FSPL depend on frequency?
Yes. Higher frequencies have greater free space path loss.