UnitConRadiation (Effective Dose)
The sievert and rem measure effective radiation dose, which reflects the biological effect of radiation on the human body. Millisieverts are commonly used in medical imaging and radiation safety discussions. This converter is for reference and educational purposes only. It is not a substitute for professional radiation safety guidance.
Common conversions
| From | To |
|---|---|
| 1 Sievert | 100 Rem |
| 1 Millisievert | 100 Millirem |
| 1 Rem | 10 Millisievert |
| 1 Microsievert | 0.001 Millisievert |
| 100 Millirem | 1 Millisievert |
Frequently asked questions
A sievert is the SI unit for effective radiation dose. It estimates biological impact rather than just physical energy absorbed.
They measure the same type of quantity on different scales. One sievert equals 100 rem.
A chest X-ray is often cited at around a tenth of a millisievert, though exact values depend on equipment and procedure. It is much lower than many CT scans.
Background radiation is the ordinary environmental exposure people receive from natural sources and some human activity. Annual totals vary by location.