Convert Centigray to Sievert
Type the number of centigrays that you wish to convert to sieverts.
How to Convert Centigrays to Sieverts
The centigray and sievert are both units of radiation dose. By definition, 1 sievert equals exactly 100 centigrays. This means to convert centigrays to sieverts, you divide by 100.
Formula
Step-by-Step Example
Convert 5 cGy to sieverts:
We need to convert centigrays to sieverts
Since 1 Sv = 100 cGy, divide by 100
5 ÷ 100 = 0.05
5 cGy = 0.05 Sv
Centigray to Sievert Conversion Table
Quick reference table for common centigray to sievert conversions. Click any value for detailed calculation.
| Centigrays (cGy) | Sieverts (Sv) |
|---|---|
| 1 cGy | 0.01 Sv |
| 2 cGy | 0.02 Sv |
| 5 cGy | 0.05 Sv |
| 10 cGy | 0.1 Sv |
| 15 cGy | 0.15 Sv |
| 20 cGy | 0.2 Sv |
| 25 cGy | 0.25 Sv |
| 50 cGy | 0.5 Sv |
| 100 cGy | 1 Sv |
About These Units
Centigray (cGy)
A centigray (cGy) equals 0.01 gray and exactly equals 1 rad. Standard unit in radiation oncology. Typical fraction: 180-200 cGy/day. Total treatment: 4,000-8,000 cGy. Prostate: 7,000-8,000 cGy. Breast: 5,000-6,000 cGy.
Sievert (Sv)
The sievert (Sv) is the SI unit of equivalent dose, measuring biological effect of radiation exposure. Accounts for radiation type via quality factors. 1 Sv = significant health risk, 4-5 Sv = 50% fatality (LD50). Acute exposure above 0.5 Sv causes radiation sickness.
Frequently Asked Questions
How do I convert centigrays to sieverts?
To convert centigrays to sieverts, divide the value by 100. For example, 10 cGy = 0.1 Sv.
How many sieverts are in 1 centigray?
1 centigray equals 0.01 sieverts.
What is the formula for centigrays to sieverts?
The formula is: Sv = cGy ÷ 100.