Convert Grays per hour to Millirads per hour
Convert Grays per hour (Gy/h) to Millirads per hour (mrad/h) instantly and accurately.
Conversion Formula
mrad/h = Gy/h × 100000
About Grays per hour
The gray per hour (Gy/h) equals 1/3600 Gy/s ≈ 2.78×10⁻⁴ Gy/s. Used in radiation processing and source strength reporting: ¹³⁷Cs irradiator calibrations are expressed in Gy/h at a reference distance; IAEA food irradiation standards cite Gy/h for conveyor output; radiobiological experiments for cancer cell survival curves use Gy/h. 1 Gy/h = 100 rad/h = 1000 mGy/h.
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.
Quick Reference Table
| Grays per hour (Gy/h) | Millirads per hour (mrad/h) |
|---|---|
| 1 Gy/h | 100000 mrad/h |
| 2 Gy/h | 200000 mrad/h |
| 5 Gy/h | 500000 mrad/h |
| 10 Gy/h | 1000000 mrad/h |
| 25 Gy/h | 2500000 mrad/h |
| 50 Gy/h | 5000000 mrad/h |
| 100 Gy/h | 10000000 mrad/h |