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Free Space Path Loss

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km
MHz
dBm
dB
dBi
dBi

Free-space path loss

92.45 dB

1.000 km at 1,000.00 MHz

Wavelength

0.2998 m

1.0000 GHz

Received power

-62.45 dBm

5.691e-10 W

Free-space spreading loss

92.45 dB

Distance and frequency determine ideal line-of-sight spreading loss.

transmitterreceiver

Range sensitivity

20 dB per 10x distance

Transmit power30.00 dBm
Transmit antenna gain0.00 dBi
Receive antenna gain0.00 dBi
Free-space path loss-92.45 dB
System loss-0.00 dB

Open Source and Easy to Use Elsewhere

This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.

Open source: review the implementation and see how the results are produced.

Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.