gray to centigray
Convert gray (Gy) to centigray (cGy). Use an editable absorbed dose converter, conversion formula, and reference table.
1 Gy = 100 cGy
Conversion formula
One gray equals 100 centigray. Multiply your value in gray by this factor to get centigray. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 gray:5 × 100 = 500 cGy
Conversion table
| gray (Gy) | centigray (cGy) |
|---|---|
| 0.01 | 1 |
| 0.1 | 10 |
| 1 | 100 |
| 2 | 200 |
| 5 | 500 |
| 10 | 1,000 |
| 25 | 2,500 |
| 50 | 5,000 |
| 100 | 10,000 |
| 1000 | 100,000 |
About these measurements
Absorbed dose measures energy deposited per unit mass.
The base reference used here is the gray. One gray is 1 base units; one centigray is 0.01 base units.
Important distinctions
Physical unit conversion only. Biological effect requires additional information and professional assessment.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert Gy to cGy?
Multiply the quantity in Gy by 100. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the centigray to gray converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
