How to convert centigrays to grays
Gy = cGy × 0.01Multiply the value in centigrays by 0.01. To go the other way, multiply by 100 (or divide by 0.01).
A centigray is smaller than a gray: it takes 100 centigrays to make one gray.
Worked examples
- 1 centigray1 cGy × 0.01 = 0.01 Gy
- 5 centigrays5 cGy × 0.01 = 0.05 Gy
- 10 centigrays10 cGy × 0.01 = 0.1 Gy
- 20 centigrays20 cGy × 0.01 = 0.2 Gy
- 100 centigrays100 cGy × 0.01 = 1 Gy
Centigrays to grays conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Centigrays (cGy) | Grays (Gy) |
|---|---|
| 0.1 cGy | 0.001 Gy |
| 0.25 cGy | 0.0025 Gy |
| 0.5 cGy | 0.005 Gy |
| 1 cGy | 0.01 Gy |
| 2 cGy | 0.02 Gy |
| 3 cGy | 0.03 Gy |
| 4 cGy | 0.04 Gy |
| 5 cGy | 0.05 Gy |
| 6 cGy | 0.06 Gy |
| 7 cGy | 0.07 Gy |
| 8 cGy | 0.08 Gy |
| 9 cGy | 0.09 Gy |
| 10 cGy | 0.1 Gy |
| Centigrays (cGy) | Grays (Gy) |
|---|---|
| 12 cGy | 0.12 Gy |
| 15 cGy | 0.15 Gy |
| 20 cGy | 0.2 Gy |
| 25 cGy | 0.25 Gy |
| 30 cGy | 0.3 Gy |
| 40 cGy | 0.4 Gy |
| 50 cGy | 0.5 Gy |
| 75 cGy | 0.75 Gy |
| 100 cGy | 1 Gy |
| 250 cGy | 2.5 Gy |
| 500 cGy | 5 Gy |
| 1,000 cGy | 10 Gy |
About the units
Centigray (cGy)
The centigray (cGy) is a unit of absorbed radiation dose in the International System of Units (SI). One centigray equals 0.01 grays (Gy).
Gray (Gy)
One joule of radiation energy absorbed per kilogram.
Frequently asked questions
How many grays are in one centigray?
There are 0.01 grays in one centigray, and this value is exact by definition.
How do I convert centigrays to grays?
Multiply the number of centigrays by 0.01. For example, 10 cGy × 0.01 = 0.1 Gy.
How many centigrays are in one gray?
One gray equals 100 centigrays. That is the reverse factor, 1 ÷ 0.01.
What is 10 centigrays in grays?
10 cGy = 0.1 Gy.
Is this cGy to Gy converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.