Convert Megarads to Grays
Convert Megarads (Mrad) to Grays (Gy) instantly and accurately.
Conversion Formula
Gy = Mrad × 10000
About Megarads
The megarad (Mrad) equals 10⁶ rad = 10⁴ Gy. Used in radiation hardening of electronics and wire/cable insulation: cross-linked polyethylene (XLPE) cable insulation is cured at 5-20 Mrad; some legacy radiation hardness assurance (RHA) test reports for space electronics quote doses in Mrad(Si). 1 Mrad = 10⁴ Gy = 10 kGy.
About Grays
The gray (Gy) is the SI coherent unit of absorbed radiation dose, defined as 1 joule of energy deposited per kilogram of matter. Named after Harold Gray (British radiobiologist, 1905-1965). Used globally in radiotherapy: curative tumour doses 40-80 Gy fractionated; total body irradiation before bone marrow transplant 12-14 Gy. 1 Gy = 1 J/kg = 100 rad.
Quick Reference Table
| Megarads (Mrad) | Grays (Gy) |
|---|---|
| 1 Mrad | 10000 Gy |
| 2 Mrad | 20000 Gy |
| 5 Mrad | 50000 Gy |
| 10 Mrad | 100000 Gy |
| 25 Mrad | 250000 Gy |
| 50 Mrad | 500000 Gy |
| 100 Mrad | 1000000 Gy |