Radiation Dose
radtokGy
Convert rad (radiation absorbed dose) (rad) to kilograys (kGy).
Factor1 rad = 1e-5 kGy
Converter
rad
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kGy
Rendered to 6 significant figures.
Formula
Formula
kGy = rad × 1e-5
Multiply any value in rad (radiation absorbed dose) by 1e-5 to obtain the value in kilograys.
Worked example
Convert 1.00000e+6 rad to kGy.
- 01Start with 1.00000e+6 rad.
- 02Multiply by the conversion factor: 1.00000e+6 × 1e-5 = 10 kGy.
Result1.00000e+6 rad = 10 kGy
Conversion table
| rad | kGy |
|---|---|
| 1 | 1e-5 |
| 2 | 2e-5 |
| 5 | 5e-5 |
| 10 | 0.0001 |
| 20 | 0.0002 |
| 50 | 0.0005 |
| 100 | 0.001 |
| 200 | 0.002 |
| 500 | 0.005 |
| 1000 | 0.01 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from rad to kGy?
1 rad equals 1e-5 kGy. To convert, multiply the value in rad (radiation absorbed dose) by 1e-5.
How do I convert 1 rad to kGy?
1 rad = 1e-5 kGy. For any value, multiply by 1e-5.
How do I convert kGy back to rad?
Divide by the same factor — or equivalently, multiply by 100000. So 1 kGy = 100000 rad.
When would I need to convert rad (radiation absorbed dose) to kilogray?
Radiation absorbed-dose conversions between rad and kGy 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).