RF and EM Tools

RF power

dBm to Watts

Convert logarithmic power.

RF power

Watts to dBm

Convert linear power.

Gain and loss

Decibel Calculator

Convert power and voltage ratios.

Link budgets

EIRP

Combine power, feed loss, and gain.

Propagation

Free Space Path Loss

Estimate ideal path attenuation.

Waves

Wavelength

Relate frequency and wavelength.

Antennas

Quarter-Wave Antenna

Estimate element lengths.

Antennas

Antenna Gain

Estimate gain from directivity or aperture.

Patterns

Antenna Directivity

Estimate directivity from beamwidth.

Arrays

Linear Array Factor

Evaluate ideal reinforcement.

Conductors

Skin Depth

Estimate current penetration.

RF phase

Phasor Calculator

Work with complex phase.

EM fields

Vector Calculator

Calculate field directions.