Banana Equivalent Dose Converter
Put radiation readings into everyday perspective by converting microsieverts into banana equivalent doses. Because a single banana emits about 0.1 µSv of natural radiation from potassium-40, this playful comparison helps explain safety levels to students and the public.
Educational information only; not a safety assessment.
Examples
- Airport body scan at 6 µSv ≈ 60 bananas.
- Dental X-ray around 20 µSv equals 200 bananas.
- Average daily background radiation of 8 µSv corresponds to 80 bananas.
FAQ
How much radiation is one banana?
Approximately 0.1 µSv per banana.
Is eating bananas dangerous?
No, the radiation is negligible compared to everyday background exposure.
Where does the banana number come from?
Scientists estimate the potassium-40 activity of a typical banana and convert it into microsieverts to provide an easy-to-grasp comparison.
Can I compare different fruits this way?
Any potassium-rich food emits a small dose, but bananas have become the standard reference because their potassium content is consistent and well studied.
Additional Information
- The banana equivalent dose is an informal metric meant for communication, not formal radiation protection planning.
- Bananas contain potassium-40, a naturally occurring radioactive isotope responsible for the 0.1 µSv estimate.
- Average annual background radiation equals roughly 3,000 µSv, or about 30,000 bananas.
- Medical procedures such as CT scans deliver far higher doses—use certified dosimetry when making health decisions.