Wireless Calculators --> RF Safety Compliance Calculator
This program is intended for far-field calculations.  It may overestimate the actual field strength of high gain antennas in the near-field (within several wavelengths of the antenna).   However, it may also underestimate the strength of fields that may be encountered in "hot spots" in the near-field.  No computer program can predict where wiring or reflective objects may create hot spots in your particular installation.
Average power at the antenna
Distance to area of interest from antenna center
Antenna gain
Frequency of Operation
Include the effects of ground reflections?

Wireless Connections provides these calculations as a courtesy. We believe in their accuracy, but results are provided as is with no warranty or guarantee.