Convert Grays per hour to Milligrays per second
Convert Grays per hour (Gy/h) to Milligrays per second (mGy/s) instantly and accurately.
Conversion Formula
mGy/s = Gy/h × 0.2777777778
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 Milligrays per second
The milligray per second (mGy/s) equals 1e-3 Gy/s. Used in high-dose-rate applications: medical linac output in IMRT mode is 1-5 mGy/s at isocentre; electron beam processing conveyors deliver 1-10 mGy/s; real-time diode dosimeters in linac vaults measure instantaneous dose rate in mGy/s during beam-on periods. 1 mGy/s = 0.1 rad/s = 3.6 Gy/h.
Quick Reference Table
| Grays per hour (Gy/h) | Milligrays per second (mGy/s) |
|---|---|
| 1 Gy/h | 0.277778 mGy/s |
| 2 Gy/h | 0.555556 mGy/s |
| 5 Gy/h | 1.38889 mGy/s |
| 10 Gy/h | 2.77778 mGy/s |
| 25 Gy/h | 6.94444 mGy/s |
| 50 Gy/h | 13.8889 mGy/s |
| 100 Gy/h | 27.7778 mGy/s |