# What is a safe RF level in µW/m²?

> The regulatory public limit is 10,000,000 µW/m² (1 mW/cm², or 10 W/m²); precautionary sleeping-area bands sit below 10 µW/m². Both refer to the same measurement.

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- Record id: `questions:what-is-a-safe-rf-level`
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- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/questions/what-is-a-safe-rf-level
- Also known as: safe µW/m² level, safe microwatt per square meter, what RF level is safe

## Key values

- **Topic:** safe levels

## Question

What RF power density is considered safe, in µW/m²?

## Answer

The FCC's enforceable public limit above 1.5 GHz is 1 mW/cm², which equals 10,000,000 µW/m² — the occupational limit is five times higher — and ICNIRP's public reference level above 2 GHz is the same figure expressed as 10 W/m². Precautionary frameworks sit far lower: building-biology practice grades a sleeping area under 0.1 µW/m² as no anomaly and above 1,000 µW/m² as extreme, and EUROPAEM proposes night-time targets in the same low range. A typical home a few metres from its own Wi-Fi router measures roughly 100–10,000 µW/m² — thousands of times under the regulatory limit and well above the precautionary bands, which is why the two camps can quote the same measurement and disagree completely.

## Related records

- [FCC general population MPE, 1.5–100 GHz](https://emfbase.com/limits/fcc-public-power-density-above-1-5-ghz): 1.0 mW/cm² power density averaged over 30 minutes — the band that covers most cellular, Wi-Fi and 5G frequencies in the United States.
- [ICNIRP 2020 general public reference level, 2–300 GHz](https://emfbase.com/limits/icnirp-public-power-density-above-2-ghz): 10 W/m² incident power density averaged over 30 minutes and over the whole body — the reference level that 5G mid-band and Wi-Fi compliance is judged against outside the U.S.
- [Building Biology SBM-2024 RF band: no anomaly](https://emfbase.com/limits/building-biology-rf-no-anomaly): Below 0.1 µW/m² peak per RF source in a sleeping area is graded 'no anomaly' — a precautionary target eight orders of magnitude below the FCC limit.
- [µW/m², mW/m² and mW/cm²](https://emfbase.com/glossary/power-density-units): Three units for the same RF quantity, spanning ten orders of magnitude: 1 mW/cm² = 10 W/m² = 10,000 mW/m² = 10,000,000 µW/m².

## Sources

- `fcc-1310` U.S. Government Publishing Office (eCFR). *47 CFR § 1.1310 — Radiofrequency radiation exposure limits*. https://www.ecfr.gov/current/title-47/section-1.1310 — regulation, link checked 2026-08-12
- `icnirp-2020` International Commission on Non-Ionizing Radiation Protection (2020). *Guidelines for Limiting Exposure to Electromagnetic Fields (100 kHz to 300 GHz)*. https://www.icnirp.org/en/publications/article/rf-guidelines-2020.html — guideline, link checked 2026-08-12
- `sbm-2024` Institut für Baubiologie + Nachhaltigkeit (IBN) (2024). *Building Biology Evaluation Guidelines for Sleeping Areas (SBM-2024)*. https://buildingbiology.com/site/downloads/SBM-2024_EVALUATION_GUIDELINES_EN.pdf — ngo, link checked 2026-08-12
- `europaem-2016` European Academy for Environmental Medicine (2016). *EUROPAEM EMF Guideline 2016 for the prevention, diagnosis and treatment of EMF-related health problems*. https://europaem.eu/en/library/blog-en/97-europaem-emf-guideline-2016 — ngo, link checked 2026-08-12

Data licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Dataset version 2026.08.1. Retrieved from EMFBase, https://emfbase.com.

This record is reference data, not medical or legal advice. Regulatory limits, scientific guidelines and precautionary values are labelled separately and answer different questions.