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Field Strength Unit Converter

Convert between electric field strength, magnetic field strength, magnetic flux density and power density under a free-space plane-wave assumption. The relationships use a wave impedance of 377 Ω and the permeability of free space.

Field Strength Conversion Results
Unit	Value
V/m	–
dBµV/m	–
dBµA/m	–
pT	–
dBpT	–
Tesla	–
Gauss	–
A/m	–
mW/cm²	–
W/m²	–

Conversions between E, H, B and power density assume an ideal free-space plane wave in the far field (Z₀ ≈ 377 Ω).

Reference conversions:

1 V/m = 120 dBµV/m
3 V/m ≈ 129.54 dBµV/m

The converted quantities are equivalent only for an ideal plane wave in the far field. Near-field conditions, shielding, reflections and measurement uncertainty require separate evaluation.

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