Convert Millirads per hour to Rads per minute
Convert Millirads per hour (mrad/h) to Rads per minute (rad/min) instantly and accurately.
Conversion Formula
rad/min = mrad/h × 1.666666667e-5
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 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.
Quick Reference Table
| Millirads per hour (mrad/h) | Rads per minute (rad/min) |
|---|---|
| 1 mrad/h | 1.667 × 10-5 rad/min |
| 2 mrad/h | 3.333 × 10-5 rad/min |
| 5 mrad/h | 8.333 × 10-5 rad/min |
| 10 mrad/h | 0.000166667 rad/min |
| 25 mrad/h | 0.000416667 rad/min |
| 50 mrad/h | 0.000833333 rad/min |
| 100 mrad/h | 0.00166667 rad/min |