Convert Millirads per hour to Grays per second
Convert Millirads per hour (mrad/h) to Grays per second (Gy/s) instantly and accurately.
Conversion Formula
Gy/s = mrad/h × 2.777777778e-9
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 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.
Quick Reference Table
| Millirads per hour (mrad/h) | Grays per second (Gy/s) |
|---|---|
| 1 mrad/h | 2.778 × 10-9 Gy/s |
| 2 mrad/h | 5.556 × 10-9 Gy/s |
| 5 mrad/h | 1.389 × 10-8 Gy/s |
| 10 mrad/h | 2.778 × 10-8 Gy/s |
| 25 mrad/h | 6.944 × 10-8 Gy/s |
| 50 mrad/h | 1.389 × 10-7 Gy/s |
| 100 mrad/h | 2.778 × 10-7 Gy/s |