RFID Read Range Calculator

Calculate RFID read range based on reader power, tag sensitivity, and antenna gain.

读写器TX功率（dBm）

天线增益（dBi）

电缆损耗（dB）

标签灵敏度（dBm）

频率（MHz）

环境因素

估计读取范围

0.0 m

(0.0 ft)

Friis传输公式

R = (c / 4πf) × √(EIRP / P_tag) × env_factor

其中EIRP = P_tx + G_ant - L_cable（线性尺度）

常见问题

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.