Centigray to Gray Converter
1 centigray is exactly 0.01 grays. Convert centigrays (cGy) to grays (Gy) below: type a value and the result updates as you type.
cGy to Gy calculator
Result
Centigray to Gray conversion
1 cGy = 0.01 Gyone centigray in grays
1 Gy = 100 cGyone gray in centigrays
Centigray (cGy): One hundredth of a gray, the same as one rad. Used in radiotherapy planning.
Gray (Gy): SI unit of absorbed dose: one joule of radiation energy absorbed per kilogram of matter.
Source:SI Brochure, 9th edition (BIPM, 2019)
How to convert centigrays to grays
To convert centigrays to grays, multiply the number of centigrays by 0.01.
Formula
Gy = cGy × 0.01
Examples
- 5 cGy = 5 × 0.01 = 0.05 Gy
- 25 cGy = 25 × 0.01 = 0.25 Gy
- 100 cGy = 100 × 0.01 = 1 Gy
Centigray to Gray conversion table
| Centigray (cGy) | Gray (Gy) |
|---|---|
| 0.1 cGy | 0.001 Gy |
| 0.5 cGy | 0.005 Gy |
| 1 cGy | 0.01 Gy |
| 2 cGy | 0.02 Gy |
| 3 cGy | 0.03 Gy |
| 5 cGy | 0.05 Gy |
| 10 cGy | 0.1 Gy |
| 20 cGy | 0.2 Gy |
| 25 cGy | 0.25 Gy |
| 50 cGy | 0.5 Gy |
| 100 cGy | 1 Gy |
| 250 cGy | 2.5 Gy |
| 500 cGy | 5 Gy |
| 1000 cGy | 10 Gy |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many grays are in one centigray?
- One centigray is exactly 0.01 grays.
- How do I convert grays to centigrays?
- To convert grays to centigrays, multiply the number of grays by 100. The formula is cGy = Gy × 100.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 0.01 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a centigray or a gray?
- A gray is 100 times larger than a centigray. In other words, a centigray is exactly 1/100 of a gray.