Specific Absorption Rate for Mobile Phones Calculator

Welcome to our guide on the Specific Absorption Rate (SAR) for mobile phones. The SAR is a measurement used to assess the rate at which the human body absorbs electromagnetic energy from mobile devices. In this article, we will delve into the concept of SAR, discuss its significance in evaluating electromagnetic exposure, and explore the associated calculations and formulas used to estimate SAR values. By understanding SAR and its implications, you can make informed decisions about mobile phone usage and prioritize your health and wellbeing.

Specific Absorption Rate for Mobile Phones Calculator
Conductivity of various human tissues (σ) Siemens/m
RMS of electric intensity of the body (Erms) Volts/m
Density of human tissue (ρ) kg/m3
Specific Absorption Rate for Mobile Phones Calculator Results
Specific Absorption Rate (SAR) W/kg

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The Specific Absorption Rate (SAR)

The Specific Absorption Rate (SAR) is a metric that quantifies the amount of electromagnetic energy absorbed by the human body when exposed to radiofrequency (RF) radiation emitted by mobile phones and other wireless devices. SAR is typically expressed in units of watts per kilogram (W/kg). It represents the rate of energy absorption in body tissues, particularly in regions of the body where the radiation is most concentrated. The SAR value is an important factor in determining the potential health risks associated with mobile phone use.

Calculating Specific Absorption Rate

The Specific Absorption Rate (SAR) can be estimated using the following formula:

SAR = (Power Absorbed / Mass of Tissue)

The SAR value is derived by dividing the power absorbed by the body tissue by the mass of the tissue being exposed to the radiation. The power absorbed is a measure of the energy absorbed per unit time, and the mass of tissue refers to the mass of the specific body part exposed to the radiation. This calculation helps in evaluating the amount of RF energy being absorbed by the body.

Significance of Specific Absorption Rate

The Specific Absorption Rate (SAR) serves as a crucial parameter in assessing potential health risks related to mobile phone use and electromagnetic exposure. It helps in:

  • Regulatory Compliance: SAR values are used by regulatory bodies and government agencies to establish safety guidelines and limits for electromagnetic radiation emitted by mobile phones. These guidelines ensure that mobile devices are within acceptable exposure limits.
  • Consumer Information: SAR values are provided by manufacturers to inform consumers about the potential radiation exposure associated with specific mobile phone models. This allows individuals to make informed choices and select devices with lower SAR values if desired.
  • Research and Studies: SAR values are utilized in scientific research to investigate the effects of electromagnetic radiation on human health. Researchers examine the correlation between SAR and various health outcomes to further understand the potential risks and develop appropriate safety guidelines.

Real-Life Application

Let's consider a real-life example. John is purchasing a new mobile phone and wants to ensure it has a low SAR value to minimize his exposure to RF radiation. He researches the SAR values of different phone models and finds one with a SAR value of 0.5 W/kg. This indicates that for every kilogram of body tissue exposed to the phone's radiation, only 0.5 watts of electromagnetic energy is absorbed. Based on his preferences for lower radiation exposure, John decides to choose this mobile phone model.

Contributions and Achievements

Various researchers and organizations have made significant contributions to the field of SAR and the understanding of electromagnetic exposure. Some notable achievements include:

  • IEEE and International Commission on Non-Ionizing Radiation Protection (ICNIRP): These organizations have established guidelines and standards for SAR values to ensure the safety of mobile phone users and prevent excessive radiation exposure.
  • Government Agencies: Regulatory bodies such as the Federal Communications Commission (FCC) in the United States and similar agencies worldwide work to enforce SAR regulations and monitor compliance among mobile phone manufacturers.
  • Scientific Research: Numerous researchers have conducted studies to explore the potential health effects of electromagnetic radiation and contribute to the understanding of SAR. Their work has helped shape safety guidelines and raise awareness about the importance of minimizing RF radiation exposure.


The Specific Absorption Rate (SAR) is a crucial parameter for assessing electromagnetic exposure from mobile phones. By understanding the associated calculations and formulas, individuals can make informed decisions about their mobile phone usage and prioritize their health. SAR values help regulate the industry, provide consumer information, and guide scientific research on the potential health risks associated with RF radiation. By considering SAR values and opting for mobile phone models with lower SAR values, individuals can take proactive steps to reduce their exposure to electromagnetic energy.

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Use of the Health and Medical Calculators

Please note that the Specific Absorption Rate For Mobile Phones Calculator is provided for your personal use and designed to provide information and information relating to the calculations only. The Specific Absorption Rate For Mobile Phones Calculator should not be used for you to self-diagnose conditions, self-medicate or alter any existing medication that you are currently prescribed by your Doctor. If the Specific Absorption Rate For Mobile Phones Calculator produces a calculation which causes you concern, please consult your Doctor for support, advice and further information.