Calculators
Two calculations account for most EMF arithmetic errors: converting between units that are not interchangeable, and applying the inverse-square law where it does not hold. Both are implemented here against the cited quantity registry.
- Unit converter
Convert within a quantity using exact SI factors, or between electric field strength and power density using the far-field relation S = E²/Z₀. Every result states its formula and, where it applies, the condition under which it is invalid.
/api/convert?quantity=magnetic-flux-density&value=0.4&from=%C2%B5T&to=mG
- Distance and exposure estimator
Free-space power density at a given distance from a transmitter, and the distance at which a transmitter falls below each regulatory, guideline and precautionary value in the dataset — with the assumptions that make it an upper bound stated alongside.