Friis Transmission Equation Calculator
Transmitter Power (Pt)
Transmitter Gain (Gt)
Receiver Gain (Gr)
Distance (d)
Frequency (f)
Recieved Power (Pr): {{friisTransmissionResult()}}

Formula:

Pr=Pt × Gt × Gr × (c/(4 × π × d× f))2

P(dB)r=Pt + Gt + Gr + (20 × log(c/(4 × π × d × f)))

Where,

Pr = Received Power

Pt = Transmitter Power

Gt = Transmitter Gain

Gr = Receiver Gain

d = Distance

f = Frequency

P(dB)r = Received Power in dB

c = Speed of light (equal to 3 ×108 m/s)