Radiation Dose
radtocGy
Convert rad (radiation absorbed dose) (rad) to centigrays (cGy).
Factor1 rad = 1 cGy
Converter
rad
Accepts numbers or expressions, e.g. 150 + 14.7
Result
cGy
Rendered to 6 significant figures.
Formula
Formula
cGy = rad × 1
Multiply any value in rad (radiation absorbed dose) by 1 to obtain the value in centigrays.
Worked example
Convert 100 rad to cGy.
- 01Start with 100 rad.
- 02Multiply by the conversion factor: 100 × 1 = 100 cGy.
Result100 rad = 100 cGy
Conversion table
| rad | cGy |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 5 | 5 |
| 10 | 10 |
| 20 | 20 |
| 50 | 50 |
| 100 | 100 |
| 200 | 200 |
| 500 | 500 |
| 1000 | 1000 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from rad to cGy?
1 rad equals 1 cGy. To convert, multiply the value in rad (radiation absorbed dose) by 1.
How do I convert 1 rad to cGy?
1 rad = 1 cGy. For any value, multiply by 1.
How do I convert cGy back to rad?
Divide by the same factor — or equivalently, multiply by 1. So 1 cGy = 1 rad.
When would I need to convert rad (radiation absorbed dose) to centigray?
Radiation absorbed-dose conversions between rad and cGy are used in radiological protection, medical physics, and nuclear-industry health physics. Gray (Gy) is the SI standard; rad remains common in older US health-physics documentation (1 Gy = 100 rad).
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).