Calculadora de Radiações em Voo
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
dose = duração × ~6 µSv/h em altitude de cruzeiro
About this calculator
The Flight Radiation Calculator estimates the cosmic radiation dose received by a passenger during a long-distance flight. At cruising altitudes (10-12 km), exposure to ionizing cosmic radiation is higher than at sea level. The calculator uses flight time and an average rate of 6 microsieverts per hour (µSv/h) to provide an approximate dose equivalent.
It works simply: enter the total flight duration in hours. The calculation multiplies this value by the rate of 6 µSv/h, resulting in the estimated dose in microsieverts. For example, a 10-hour flight yields about 60 µSv. This value can be compared to safety limits: the recommended annual public exposure is 1 mSv (1000 µSv), and for occupational exposure, 20 mSv.
Use this tool to plan frequent travel, especially for cabin crew, business travelers, or tourists taking many intercontinental flights. It helps raise awareness of cumulative exposure over time. Keep in mind that flights on polar routes or at higher altitudes may have higher rates, but this calculator provides a general average.
Cautions: the 6 µSv/h rate is an average; actual radiation varies with latitude, exact altitude, solar cycle, and atmospheric conditions. Pregnant women and children are more sensitive to radiation, but occasional flights pose no significant risk. For specific concerns, consult a health professional or agencies like ANAC or the National Nuclear Energy Commission.
Frequently asked questions
What is the radiation dose on a 12-hour flight?
The estimated dose is 72 µSv (12 hours × 6 µSv/h). That is about 7% of the annual public limit (1 mSv).
Is frequent flying dangerous?
For most people, occasional flights pose no risk. Cabin crew may accumulate higher doses, but within safe limits (up to 20 mSv/year for occupational exposure).
Is radiation higher on polar flights?
Yes, polar routes have higher cosmic radiation due to the Earth's magnetic field. The rate can reach 7-8 µSv/h.
Can pregnant women fly safely?
Occasional flights are considered safe. However, limit unnecessary exposure. Consult your doctor for frequent travel.
How does the calculator estimate dose?
It multiplies flight duration by the average rate of 6 µSv/h, a reference for commercial flights at mid-latitudes. Actual radiation may vary.