Link Budget Calculator

Calculate RFID link budget including reader power, cable loss, antenna gain, and tag sensitivity.

Transmitter (Reader)

TX Power (dBm)

TX Antenna Gain (dBi)

TX Cable Loss (dB)

Channel

Frequency (MHz)

Distance (m)

Additional Losses (dB)

Includes polarization mismatch, multipath, obstacles

Receiver (Tag)

Tag Sensitivity (dBm)

Tag Antenna Gain (dBi)

EIRP	dBm
Free Space Path Loss	- dB
Additional Losses	- dB
Tag Antenna Gain	+ dBi
Received Power at Tag	dBm
Tag Sensitivity	dBm

Link Margin

Frequently Asked Questions

Yes, all tools on RFIDFYI are completely free with no account required. Tools run entirely in your browser (client-side JavaScript) and do not send your data to any server.

All tools are fully responsive and work on smartphones, tablets, and desktop browsers. Calculation and encoding tools work on any device.