Kilogray (kGy)
A kilogray is 1000 grays, the scale of radiation sterilisation (25 kGy for medical devices) and food irradiation.
Symbol: kGy
Quantity: absorbed dose of ionising radiation
SI relation: 1 kGy = 1000 Gy (exact)
Derivation: 1 kGy = 10³ Gy.
Exact: yes, by definition
Typical uses
- Sterilisation of medical devices (25 kGy)
- Food irradiation (up to 10 kGy)
- Radiation testing of materials
Convert kilograys to other units
| Conversion | 1 kGy equals | Reverse |
|---|---|---|
| kilogray to gray | 1000 Gy | gray to kilogray |
| kilogray to milligray | 1000000 mGy | milligray to kilogray |
| kilogray to rad | 100000 rad | rad to kilogray |
| kilogray to microgray | 1000000000 µGy | microgray to kilogray |
| kilogray to centigray | 100000 cGy | centigray to kilogray |
| kilogray to millirad | 100000000 mrad | millirad to kilogray |
Open the Absorbed Radiation Dose Converter to convert any value between all units.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (becquerel, gray, sievert, lux) and Table 2 (candela).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Kilogray (kGy). Retrieved October 25, 2026, from https://scientificconverters.com/units/kilogray/
IEEE
Scientific Converters, "Kilogray (kGy)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/kilogray/