Convert Kilograys to Centigrays (kGy to cGy)
1 kilogray (kGy) = 100000 centigrays (cGy). 1 cGy = 0.00001 kGy. Example: 15 kGy = 15 × 100000 = 1500000 cGy.
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1 kGy = 100000 cGy
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilogray to centigray converter to paste a column from Excel.
How to Convert Kilogray to Centigray
- 1 kGy = 100000 cGy
- 1 cGy = 0.00001 kGy
- Example: convert 15 kGy to cGy: 15 kGy = 15 × 100000 cGy = 1500000 cGy
Formula
cGy = kGy × 100000
Derivation from SI units:
- 1 kGy = 10³ Gy.
- 1 cGy = 0.01 Gy = 1 rad.
- 1 kGy = 1000 Gy ÷ 0.01 Gy per cGy = 100000 cGy
Both units are defined exactly, so the factor is exact. Kilogray definition: kilogray; Centigray definition: centigray.
Worked examples
- A reading of 15 kGy converts to 1500000 cGy.
15 kGy × 100000 = 1500000 cGy - A value of 50 kGy is 5000000 cGy.
50 kGy × 100000 = 5000000 cGy
Kilogray to Centigray conversion table
| Kilograys (kGy) | Centigrays (cGy) |
|---|---|
| 1 kGy | 100000 cGy |
| 5 kGy | 500000 cGy |
| 10 kGy | 1000000 cGy |
| 15 kGy | 1500000 cGy |
| 25 kGy | 2500000 cGy |
| 30 kGy | 3000000 cGy |
| 50 kGy | 5000000 cGy |
| 100 kGy | 10000000 cGy |
| 1000 kGy | 100000000 cGy |
| 10000 kGy | 1000000000 cGy |
Where it's used
Kilograys are used for sterilisation of medical devices (25 kGy), while centigrays appear in radiotherapy plans (e.g. 200 cGy per fraction). 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 centigray | 100000 cGy |
| kilogray to gray | 1000 Gy |
| kilogray to milligray | 1000000 mGy |
| kilogray to rad | 100000 rad |
| kilogray to microgray | 1000000000 µGy |
| kilogray to millirad | 100000000 mrad |
Frequently asked questions
How many centigrays are in 1 kilogray?
1 kGy = 100000 cGy.
How do I convert kilograys to centigrays?
Multiply the value in kGy by 100000. For example, 15 kGy × 100000 = 1500000 cGy.
Is the kGy to cGy conversion exact?
Yes. Both units are defined exactly, and 1 kGy is exactly 100000 cGy.
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). Convert Kilograys to Centigrays (kGy to cGy). Retrieved October 25, 2026, from https://scientificconverters.com/absorbed-dose/kilograys-to-centigrays/
IEEE
Scientific Converters, "Convert Kilograys to Centigrays (kGy to cGy)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/absorbed-dose/kilograys-to-centigrays/