Average individual background radiation dose per hour

Sievert (Sv)
2.3×10⁻⁷
Millisievert (mSv)
2.3×10⁻⁴
Microsievert (μSv)
0.23

Röntgen equivalent man (rem)
2.3×10⁻⁵
Millirem (mrem)
0.02

Dental radiography
0.05
Average individual background radiation dose per hour
1
Vicinity of the reactor core after the Chernobyl disaster per hour
7.67×10⁻¹⁰