Convert Grays per hour to Rads per minute
Convert Grays per hour (Gy/h) to Rads per minute (rad/min) instantly and accurately.
Conversion Formula
rad/min = Gy/h × 1.666666667
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 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
| Grays per hour (Gy/h) | Rads per minute (rad/min) |
|---|---|
| 1 Gy/h | 1.66667 rad/min |
| 2 Gy/h | 3.33333 rad/min |
| 5 Gy/h | 8.33333 rad/min |
| 10 Gy/h | 16.6667 rad/min |
| 25 Gy/h | 41.6667 rad/min |
| 50 Gy/h | 83.3333 rad/min |
| 100 Gy/h | 166.667 rad/min |