Convert Rads per hour to Grays per minute
Convert Rads per hour (rad/h) to Grays per minute (Gy/min) instantly and accurately.
Conversion Formula
Gy/min = rad/h × 0.0001666666667
About Rads per hour
The rad per hour (rad/h) equals 0.01 Gy/h ≈ 2.78×10⁻⁶ Gy/s. Standard unit on US emergency dosimetry instruments and civil defense survey meters; Chernobyl sarcophagus contact dose rates were hundreds of rad/h; criticality accident dosimetry and NRC incident reports continue to evaluate dose rates in rad/h. 1 rad/h = 0.01 Gy/h = 10 mGy/h.
About Grays per minute
The gray per minute (Gy/min) is the primary clinical radiotherapy machine output unit. Standard linac dose rates are 1-6 Gy/min at isocentre; stereotactic body radiotherapy (SBRT) uses up to 10 Gy/min; ¹⁹²Ir HDR brachytherapy sources are characterised in Gy/min at 1 cm reference distance. 1 Gy/min = 100 rad/min ≈ 1.67×10⁻² Gy/s.
Quick Reference Table
| Rads per hour (rad/h) | Grays per minute (Gy/min) |
|---|---|
| 1 rad/h | 0.000166667 Gy/min |
| 2 rad/h | 0.000333333 Gy/min |
| 5 rad/h | 0.000833333 Gy/min |
| 10 rad/h | 0.00166667 Gy/min |
| 25 rad/h | 0.00416667 Gy/min |
| 50 rad/h | 0.00833333 Gy/min |
| 100 rad/h | 0.0166667 Gy/min |