Convert Millirads per hour to Nanograys per hour
Convert Millirads per hour (mrad/h) to Nanograys per hour (nGy/h) instantly and accurately.
Conversion Formula
nGy/h = mrad/h × 10000
About Millirads per hour
The millirad per hour (mrad/h) equals 1e-5 Gy/h = 10 µGy/h. Legacy US radiation protection unit used by area monitors and Geiger counters calibrated before SI adoption; EPA environmental surveillance stations report in mrad/h alongside µGy/h; NRC licence boundary dose-rate surveys often cite mrad/h. 1 mrad/h = 1e-5 Gy/h = 10 µGy/h.
About Nanograys per hour
The nanogray per hour (nGy/h) equals 1e-9 Gy/h ≈ 2.78×10⁻¹³ Gy/s. Natural background cosmic-ray dose rates at sea level are 30-50 nGy/h; at aviation cruising altitude they rise to 3000-6000 nGy/h. IAEA environmental surveillance networks and national monitoring stations report ambient gamma dose rates in nGy/h. 1 nGy/h = 1e-9 Gy/h.
Quick Reference Table
| Millirads per hour (mrad/h) | Nanograys per hour (nGy/h) |
|---|---|
| 1 mrad/h | 10000 nGy/h |
| 2 mrad/h | 20000 nGy/h |
| 5 mrad/h | 50000 nGy/h |
| 10 mrad/h | 100000 nGy/h |
| 25 mrad/h | 250000 nGy/h |
| 50 mrad/h | 500000 nGy/h |
| 100 mrad/h | 1000000 nGy/h |