Radiation Dose
mGytokGy
Convert milligrays (mGy) to kilograys (kGy).
Factor1 mGy = 1e-6 kGy
Converter
mGy
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kGy
Rendered to 6 significant figures.
Formula
Formula
kGy = mGy × 1e-6
Multiply any value in milligrays by 1e-6 to obtain the value in kilograys.
Worked example
Convert 1.00000e+6 mGy to kGy.
- 01Start with 1.00000e+6 mGy.
- 02Multiply by the conversion factor: 1.00000e+6 × 1e-6 = 1 kGy.
Result1.00000e+6 mGy = 1 kGy
Conversion table
| mGy | kGy |
|---|---|
| 1 | 1e-6 |
| 2 | 2e-6 |
| 5 | 5e-6 |
| 10 | 1e-5 |
| 20 | 2e-5 |
| 50 | 5e-5 |
| 100 | 0.0001 |
| 200 | 0.0002 |
| 500 | 0.0005 |
| 1000 | 0.001 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from mGy to kGy?
1 mGy equals 1e-6 kGy. To convert, multiply the value in milligrays by 1e-6.
How do I convert 1 mGy to kGy?
1 mGy = 1e-6 kGy. For any value, multiply by 1e-6.
How do I convert kGy back to mGy?
Divide by the same factor — or equivalently, multiply by 1000000. So 1 kGy = 1.00000e+6 mGy.
When would I need to convert milligray to kilogray?
Radiation absorbed-dose conversions between mGy 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).