SAC Rate Calculator


Calculating the specific absorption rate (SAR) is crucial when dealing with the safety of electronic devices, especially those that emit radiofrequency (RF) radiation. The SAR rate is a measure of the amount of RF energy absorbed by the body when exposed to such devices. To simplify this process, we’ll create a SAR rate calculator.

How to Use

  1. Enter the relevant values in the input fields.
  2. Click the “Calculate” button.
  3. Review the calculated SAR rate displayed.


The SAR rate (S) is calculated using the formula:


  • S is the SAR rate in watts per kilogram (W/kg).
  • C is the specific energy absorption rate in joules per kilogram (J/kg).
  • E is the exposure time in seconds (s).
  • M is the mass of the exposed tissue in kilograms (kg).
  • t is the exposure duration in seconds (s).

Example Solve

Let’s assume:

  • C=2J/kg
  • E=10s
  • M=0.5kg
  • t=20s


Q: What is SAR?

A: SAR stands for Specific Absorption Rate, which measures the rate at which the human body absorbs RF energy from electronic devices.

Q: Why is SAR important?

A: SAR is crucial in assessing potential health risks associated with RF exposure from electronic devices.

Q: How does the calculator work?

A: The calculator uses the SAR formula to compute the rate based on user-input values.

Q: Are there safety limits for SAR?

A: Yes, regulatory bodies define SAR limits to ensure the safety of electronic devices.


In conclusion, understanding and calculating SAR rates are essential for evaluating the safety of electronic devices. Our SAR rate calculator simplifies this process, providing users with a quick and accurate assessment of RF exposure.

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