Electric and Magnetic Field Strength Calculators

electric field
magnetic field
field strength
power density
calculator

This page provides calculator for determining electric and magnetic field strength. It details the formulas and equations used in these calculations.

Inputs

Outputs

The calculator take radiated power, transmit antenna gain, and distance as inputs and produce electric field strength in V/meter and magnetic field strength in A/m as outputs. The power density in Watt/meter^2 is also calculated.

EXAMPLE:

  • INPUTS:
    • Pt = 18 dBm (i.e., 0.06310 Watt)
    • Gt = 12 dBi (15.84 numeric value)
    • d = 2 Km (2000 meters)
  • OUTPUTS:
    • Electric Field Strength = 0.002739 V/meter
    • Magnetic Field Strength = 0.000007264 A/m
    • Power Density = 1.989x10^-8 W/m^2

Formulas for Electric and Magnetic Field Strength Calculators

E and H field strength and power density at a distance

Figure 1: Field strength and power density at a distance

As shown in Figure 1, the calculator determines the field strength and power density at a receiver placed at a distance (d) from the transmitter. The following equations are used for the Electric Field Strength and Magnetic Field Strength calculators.

electric magnetic field strength formula

RF Field Strength Calculator

RF Field Strength Calculator

Calculate RF field strength using this online calculator. Understand the formula and its importance in wireless communication and safety.

rf
field strength
calculator