JavaScript
Power Calculator
dBW / Watts / ERP / EIRP 

Convert dBWatts to Watts

Enter Value (dBW) : dBWatts = Watts 

Convert Watts to dBWatts

Enter Value (Watts) : Watts = dBW 

Calculating ERP and EIRP

Enter the Transmitter Power Output (TPO) : 
Enter the Antenna Gain : 
Effective Radiated Power (ERP) =  dBW =  Watts 
Effective Isotropic Radiated Power (EIRP) =  dBW =  Watts 

JavaScript code for these calculators provided by Michael Davis