Radiation Dose Comparison Calculator
Compare radiation exposure levels in millisieverts.
See how common sources compare to annual background radiation.
Radiation Dose Comparison
Radiation dose is measured in millisieverts (mSv) or microsieverts (μSv).
Common radiation exposures:
| Source | Dose (mSv) |
|---|---|
| Dental X-ray | 0.005 |
| Chest X-ray | 0.02 |
| Transatlantic flight | 0.08 |
| Mammogram | 0.4 |
| Head CT scan | 2.0 |
| Chest CT scan | 7.0 |
| Annual background (average) | 3.0 |
| Abdominal CT scan | 8.0 |
| Annual limit (radiation worker) | 50.0 |
Background radiation averages about 3 mSv per year, depending on where you live. Higher altitudes and certain geological regions have more natural radiation.
Important: This calculator is for educational comparison only. It is not medical advice. Consult your doctor about any radiation exposure concerns.