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RF-Calculator

Calculate wavelength for a known frequency (Free Space)
MHz λ (m)

Calculate VSWR from Forward and Reverse Power
Forward Power (W) VSWR
Reverse Power (W)
Forward Power (dBm) VSWR
Reverse Power (dBm)

Calculate radiated magnetic field from a loop antenna (Low frequency, Close proximity)
      dBμA/m
Loop Antenna Diameter (m) pT
Loop Antenna Windings (N) dBpT
Current into Loop Antenna (A) Tesla
Distance from Loop Antenna (m) Gauss
      A/m

Calculate Power Density & Field Level (Far Field)
Power into Antenna (W) W/m^2
Antenna Gain (dBi) dBμV/m
Distance from Antenna (m) V/m
  A/m
  V^2/m^2
  A^2/m^2
  mW/cm^2

Calculate Power to Generate a Known Field (Far Field)
Required Field (V/m) W
Antenna Gain (dBi)
Distance from Antenna (m)

Calculate Circular Waveguide Attenuation
Frequency (MHz) dB
Diameter (mm)
Length (mm)

Calculate Gain from Antenna Factor (50 Ω system)
Antenna Factor (dB/m) dBi
Frequency (MHz)

Convert mW/cm^2 to pJ/cm^2 (Free Space)
mW/m^2 pJ/cm^2

Convert pJ/cm^2 to mW/cm^2 (Free Space)
pJ/cm^2 mW/cm^2

Convert dBm to W (50 Ω system)
dBm W

Convert W to dBm (50 Ω system)
W dBm

Convert dBm to V (50 Ω system)
dBm V

Convert V to dBm (50 Ω system)
V dBm

Convert dBm to dBμV (50 Ω system)
dBm dBμV

Convert dBμV to dBm (50 Ω system)
dBμV dBm
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