Convert Grays per second to Millirads per hour
Convert Grays per second (Gy/s) to Millirads per hour (mrad/h) instantly and accurately.
Conversion Formula
mrad/h = Gy/s × 360000000
About Grays per second
The gray per second (Gy/s) is the SI coherent unit of absorbed dose rate, equal to 1 joule per kilogram per second, dimensionally equivalent to W/kg or m²/s³. Used in HDR brachytherapy source strength, FLASH radiotherapy research (>40 Gy/s for normal tissue sparing), and particle accelerator beam-loss dosimetry. 1 Gy/s = 60 Gy/min = 3600 Gy/h = 100 rad/s.
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 second (Gy/s) | Millirads per hour (mrad/h) |
|---|---|
| 1 Gy/s | 360000000 mrad/h |
| 2 Gy/s | 720000000 mrad/h |
| 5 Gy/s | 1.8 × 109 mrad/h |
| 10 Gy/s | 3.6 × 109 mrad/h |
| 25 Gy/s | 9 × 109 mrad/h |
| 50 Gy/s | 1.8 × 1010 mrad/h |
| 100 Gy/s | 3.6 × 1010 mrad/h |