About EMF.exposed

Last reviewed: 19 October 2026

EMF.exposed is an educational reference site about electromagnetic fields (EMF) in everyday life. It answers three questions in plain language: what power-frequency and radiofrequency fields are, what the major scientific bodies actually conclude about health effects, and which habits measurably reduce exposure. The site is free to use and ad-supported — see the Privacy Policy for how cookies and advertising work.

What the calculator estimates

The homepage calculator estimates exposure from the devices, distances and usage patterns you enter. It combines published device emission ranges with position and mode factors, applies a distance fall-off law wherever a distance input exists (inverse-cube within 20 m of power lines and inverse-square beyond; inverse-square beyond 10 m of transformer stations, held constant closer in; and inverse-distance for AM transmitters), and compares the result with the ICNIRP public reference levels — ICNIRP (2010) for power-frequency fields and ICNIRP (2020) for radiofrequency fields.

The output is a model-based educational estimate, not a measurement. It is not a substitute for an on-site survey with a calibrated meter, and it is not medical advice.

Sources we rely on

Every factual claim on the site carries a dated citation:

• ICNIRP (2010), "Guidelines for limiting exposure to time-varying electric and magnetic fields (1 Hz to 100 kHz)", Health Physics 99(6): 818–836.
• ICNIRP (2020), "Guidelines for limiting exposure to electromagnetic fields (100 kHz to 300 GHz)", Health Physics 118(5): 483–524.
• IARC (2002), Monographs Vol. 80 — ELF magnetic fields: Group 2B "possibly carcinogenic".
• IARC (2011), Monographs Vol. 102 — RF electromagnetic fields: Group 2B.
• WHO (2007), Environmental Health Criteria 238: Extremely low frequency (ELF) fields.
• Karipidis et al. (2024), Environment International — WHO-commissioned systematic review finding no association between mobile-phone use and brain cancer in human studies.

Editorial position and limits

• Estimates are model-based and educational — never measurements, and never a diagnosis of your home, workplace or health.
• We have no product to sell. Our conclusion on consumer "EMF blockers" (stickers, chips, pendants) is that the credible evidence does not support them; distance and time are the levers that actually work.
• No adverse health effects are confirmed within international limits, and research on long-term effects is ongoing — we say so plainly rather than either alarming or reassuring.
• Corrections are welcome: if a number, citation or FAQ answer looks wrong, email us the section and we will check it against the cited source edition.

Who publishes it

EMF.exposed is published by webuildstuff.io. The site's issue tracker and source history are public on GitHub — webuildstuffio/emf.exposed.

Questions, corrections or feedback: feedback@emf.exposed.