Radiation Protection

Calculate Your Radiation Dose

How to use this calculator

Use the calculator below to estimate your yearly doseHelpdoseDose is defined as the amount of radiation or energy absorbed by a person's body. from the most significant sources of ionizing radiationHelpionizing radiationRadiation with so much energy it can knock electrons out of atoms. Ionizing radiation can affect the atoms in living things, so it poses a health risk by damaging tissue and DNA in genes.. Estimates are given in milliremHelpmilliremThe millirem is the U.S. unit used to measure effective dose. One millirem equals 0.001 rem. The international unit is milliSievert (mSv). (mrem)Helpmremone thousandth of a rem, the U.S. unit for effective dose. Effective dose is a measure of the amount of radiation absorbed by a person that accounts for the type of radiation received and the effects on particular organs. (The corresponding international unit for effective dose is the millisievert (mSv).)

According to the National Council on Radiation Protection and Measurements (NCRP), the average yearly radiation dose per person in the U.S. is 620 mrem


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More Info


  • Radiation dose is expressed in a unit called millirem (mrem). In the United States, the average person is exposed to an effective dose equivalent of approximately 620 mrem (whole-body exposure) per year from all sources (National Council on Radiation Protection and Measurements (NCRP) Report No.160) Exit.

  • Current science suggests there is some cancer risk from any exposure to radiation. However, it is not possible to tell whether a particular cancer was caused by very low doses of radiation or by something else.

  • To learn more about exposure pathways and how radiation affects the body, see our Radiation Health Effects page.