Engineering References → Calculators → Wavelength, VSWR & Power Density Calculator
Wavelength, VSWR & Power Density Calculator
Free RF calculator: wavelength, VSWR from forward/reverse power (W or dBm), far-field power density, antenna factor to gain, and dBm ↔ W, V, dBµV in 50 Ω.
RF Calculator
Wavelength, VSWR, power density, field levels, and unit conversions.
Wavelength from Frequency (Free Space)
Frequency (MHz)
λ (m)
—
VSWR from Forward / Reverse Power (W)
Forward Power (W)
Reverse Power (W)
VSWR
—
VSWR from Forward / Reverse Power (dBm)
Forward Power (dBm)
Reverse Power (dBm)
VSWR
—
Power Density & Field Level (Far Field)
Power into Antenna (W)
Antenna Gain (dBi)
Distance (m)
W/m²
—
dBµV/m
—
V/m
—
A/m
—
mW/cm²
—
Power to Generate Known Field (Far Field)
Required Field (V/m)
Antenna Gain (dBi)
Distance (m)
Required Power (W)
—
Gain from Antenna Factor (50 Ω system)
Antenna Factor (dB/m)
Frequency (MHz)
Gain (dBi)
—
dBm ↔ W (50 Ω)
dBm → W
—
W → dBm
—
dBm ↔ V (50 Ω)
dBm → V
—
V → dBm
—
dBm ↔ dBµV (50 Ω)
dBm → dBµV
—
dBµV → dBm
—
More RF calculators
Need Help Interpreting Results?
CTS provides EMC testing and compliance consulting. Contact us to discuss your product's test results and certification requirements.
Contact CTS →