Free Space Path Loss Calculator
Calculate RF signal loss over distance for wireless link budget analysis.
Path Loss
100.04 dB
@ 1 km, 2.4 GHz
@ 1W (30 dBm) TX
-70.04 dBm RX
@ 100mW (20 dBm) TX
-80.04 dBm RX
Formula
FSPL(dB) = 20 × log₁₀(d_km) + 20 × log₁₀(f_MHz) + 32.44