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| Symbol: | Gy |
| Category: | Radiation, specific energy |
| SI Equivalent: | 1 Gy |
| Dimension: | L2T-2 |
| System: | SI |
| Notes | |
| Named after L. H. Gray (1905-1965), this unit is approximately the absorbed dose delivered when the energy per unit mass imparted to matter by ionizing radiation is 1 joule per kilogram. 1 Gy = 100 rad | |
1 Gy =
| Dose equivalent | ||
| Symbol | Unit Name | |
| 100 | rem | rem |
| 1 | Sv | sievert |
| Radiation, specific energy | ||
| Symbol | Unit Name | |
| 1 | kerma | |
| 1×10-3 | kGy | kilogray |
| 1×10-4 | Mrd | megarad |
| 100 | rd | rad |
| Thermal heat capacity | ||
| Symbol | Unit Name | |
| 4.29923×10-4 | Btu (IT)/lbm | British thermal unit (IT) per pound mass |
| 4.3021×10-4 | Btu (therm.)/lbm | British thermal unit (therm.) per pound mass |
| 2.38849×10-4 | cal (IT)/g | calorie (IT) per gram |
| 2.39006×10-4 | cal (therm.)/g | calorie (therm.) per gram |
| 1×10-3 | J/g | joule per gram |
| 1 | J/kg | joule per kilogram |
| 2.38849×10-4 | Cal (IT)/kg, kcal/kg | kilocalorie (IT) per kilogram |
| 2.77778×10-7 | kWh/kg | kilowatt-hour per kilogram |