EMF calculator

17 June 2021

To help licensees assess compliance with the EMF licence condition, we have developed a simple EMF calculator.

Licensees can enter basic parameters of their radio system (radiated power, maximum time transmitting in any six minute period, and frequency) into the calculator. Based on this, the calculator will calculate a separation distance that the licensee can maintain between the radio equipment and members of the general public in order to demonstrate compliance. Licensees can save or print the output of the EMF calculator and keep this with their licence as evidence of compliance.

Download the EMF calculator (XLSX, 67.9 KB)

This calculator is just one method of assessing compliance. More detailed information on acceptable methods for assessing compliance are included in section 6 of our Guidance on EMF Compliance and Enforcement.

Calculator limitations

This calculator has been designed to allow licensees to simply and easily assess compliance, without the need for technical knowledge. It therefore uses simplified assumptions and will produce conservative results. In some cases, it may significantly overestimate the separation distance that is strictly needed to ensure compliance with the general public EMF limits. Licensees can undertake a more detailed analysis, e.g. by using a more advanced assessment tool or by seeking help from a professional installer, and this would likely result in smaller separation distances.

Our calculator does not currently cover frequencies below 10 MHz.

We may provide an additional calculator with extra functionality and may also provide an online version of the calculator at a later date. We will provide any updates on this page of our website.