Convert Kilograys to Rads (kGy to rad)
1 kilogray (kGy) = 100000 rads (rad). 1 rad = 0.00001 kGy. Example: 15 kGy = 15 × 100000 = 1500000 rad.
Also searched as kilograys to rad, kilograys in rad, kilograys into rads, kGy to rad, kGy in rads, kGy into rad, kilogray to rad, kGy to rads converter and how many rads in a kilogray.
1 kGy = 100000 rad
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilogray to rad converter to paste a column from Excel.
How to Convert Kilogray to Rad
- 1 kGy = 100000 rad
- 1 rad = 0.00001 kGy
- Example: convert 15 kGy to rad: 15 kGy = 15 × 100000 rad = 1500000 rad
Formula
rad = kGy × 100000
Derivation from SI units:
- 1 kGy = 10³ Gy.
- 1 rad = 100 erg/g = 0.01 Gy.
- 1 kGy = 1000 Gy ÷ 0.01 Gy per rad = 100000 rad
Both units are defined exactly, so the factor is exact. Kilogray definition: kilogray; Rad definition: rad.
Worked examples
- A reading of 15 kGy converts to 1500000 rad.
15 kGy × 100000 = 1500000 rad - A value of 50 kGy is 5000000 rad.
50 kGy × 100000 = 5000000 rad
Kilogray to Rad conversion table
| Kilograys (kGy) | Rads (rad) |
|---|---|
| 1 kGy | 100000 rad |
| 5 kGy | 500000 rad |
| 10 kGy | 1000000 rad |
| 15 kGy | 1500000 rad |
| 25 kGy | 2500000 rad |
| 30 kGy | 3000000 rad |
| 50 kGy | 5000000 rad |
| 100 kGy | 10000000 rad |
| 1000 kGy | 100000000 rad |
| 10000 kGy | 1000000000 rad |
Where it's used
Kilograys are used for sterilisation of medical devices (25 kGy), while rads appear in US radiation safety and older literature. Both measure absorbed dose of ionising radiation, so the conversion is a fixed factor.
Kilogray to other absorbed dose units
| Conversion | 1 kGy equals |
|---|---|
| kilogray to rad | 100000 rad |
| kilogray to gray | 1000 Gy |
| kilogray to milligray | 1000000 mGy |
| kilogray to microgray | 1000000000 µGy |
| kilogray to centigray | 100000 cGy |
| kilogray to millirad | 100000000 mrad |
Frequently asked questions
How many rads are in 1 kilogray?
1 kGy = 100000 rad.
How do I convert kilograys to rads?
Multiply the value in kGy by 100000. For example, 15 kGy × 100000 = 1500000 rad.
Is the kGy to rad conversion exact?
Yes. Both units are defined exactly, and 1 kGy is exactly 100000 rad.
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).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "rad (absorbed dose)".
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). Convert Kilograys to Rads (kGy to rad). Retrieved October 25, 2026, from https://scientificconverters.com/absorbed-dose/kilograys-to-rads/
IEEE
Scientific Converters, "Convert Kilograys to Rads (kGy to rad)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/absorbed-dose/kilograys-to-rads/