Convert Rads per minute to Millirads per hour
Convert Rads per minute (rad/min) to Millirads per hour (mrad/h) instantly and accurately.
Conversion Formula
mrad/h = rad/min × 60000
About Rads per minute
The rad per minute (rad/min) equals 0.01 Gy/min ≈ 1.67×10⁻⁴ Gy/s. Historically the primary US radiation therapy output unit: cobalt-60 and early linac machines from the 1960s-1980s are documented in rad/min at isocentre; radiation processing conveyor throughput calculations and legacy NIST linac calibrations use rad/min. 1 rad/min = 0.01 Gy/min = 1 cGy/min.
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
| Rads per minute (rad/min) | Millirads per hour (mrad/h) |
|---|---|
| 1 rad/min | 60000 mrad/h |
| 2 rad/min | 120000 mrad/h |
| 5 rad/min | 300000 mrad/h |
| 10 rad/min | 600000 mrad/h |
| 25 rad/min | 1500000 mrad/h |
| 50 rad/min | 3000000 mrad/h |
| 100 rad/min | 6000000 mrad/h |