Free Space Loss Wireless Calculator
Estimate free space path loss (FSPL) between two antennas for a given frequency and distance. This tool supports SEO around terms like RF path loss, wireless link loss, and line-of-sight propagation on its own URL.
Free Space Loss Wireless Calculator — Power loss over distance
Free Space Loss is the loss of power over distance (assuming no FRESNEL Effect and nothing in the way). This is a very idealised calculation and in practice everything interferes with the signal but this will give you a reasonable approximation of the actual loss over distance.
Enter the system Frequency in MHz and the distance in either Kilometers (Km) or Miles below and then click the 'Calculate' button. 1 GHz = 1000 MHz e.g. 2400 = 2.4 GHz.
See the calculations and equations used for this wireless calculator.
Free Space Calculations
Free space loss = 36.56 + 20Log10(Frequency) + 20Log10(Distance in miles)
- Calculator normalises all distances to miles
- Miles to Kilometers = 1.609
- Kilometers to miles = 0.621
