Free FSPL Wi-Fi Coverage Calculator
29
Jan
Technical Benefits

FSPL Wi-Fi Coverage Calculator

FSPL, short for Free-space Path Loss, is the attenuation of radio energy between transmitter and receiver antennas. Its usually used to calculate the Wi-Fi wireless coverage for a wireless router.

Here is the type calculation of the Wi-Fi range and signal strength based on the FSPL formula. Our 4G Wi-Fi outdoor routers output 27~30dBm Wi-Fi power on MIMO 5dBi omni Wi-Fi antennas. You can check the typical technical coverage in the open area without barriers.

To check the wireless coverage of other brands’ 4G Wi-Fi routers, you need to know their Wi-Fi output power in the unit of dBm and their Wi-Fi antenna gain in the dB unit on related Wi-Fi frequency spectrum. Generally speaking, the antenna gain is higher the better. On the other hand, the Wi-Fi output power is not. A more powerful Wi-Fi booster might drive packet losses even if the Wi-Fi signals are significantly high.

Outdoor FSPL WiFi Coverage Calculation

dBm to Watt Conversion Table

dBm Watts   dBm Watts   dBm Watts
0
1.0 mW
   16 40 mW   32 1.6 W
1
1.3 mW
   17 50 mW   33 2.0 W
2
1.6 mW
   18 63 mW   34 2.5 W
3
2.0 mW
   19 79 mW   35 3.2 W
4
2.5 mW
   20 100 mW   36 4.0 W
5
3.2 mW
   21 126 mW   37 5.0 W
6 4 mW   22 158 mW   38 6.3 W
7 5 mW   23 200 mW   39 8.0 W
8 6 mW   24 250 mW   40 10 W
9 8 mW   25 316 mW   41 13 W
10 10 mW   26 398 mW   42 16 W
11 13 mW   27 500 mW   43 20 W
12 16 mW   28 630 mW   44 25 W
13 20 mW   29 800 mW   45 32 W
14 25 mW   30 1.0 W   46 40 W
15 32 mW   31 1.3 W   47 50 W

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