Radiation Dose
mGytonGy
Convert milligrays (mGy) to nanograys (nGy).
Factor1 mGy = 1000000 nGy
Converter
mGy
Accepts numbers or expressions, e.g. 150 + 14.7
Result
nGy
Rendered to 6 significant figures.
Formula
Formula
nGy = mGy × 1000000
Multiply any value in milligrays by 1000000 to obtain the value in nanograys.
Worked example
Convert 1 mGy to nGy.
- 01Start with 1 mGy.
- 02Multiply by the conversion factor: 1 × 1000000 = 1.00000e+6 nGy.
Result1 mGy = 1.00000e+6 nGy
Conversion table
| mGy | nGy |
|---|---|
| 1 | 1.0000e+6 |
| 2 | 2.0000e+6 |
| 5 | 5.0000e+6 |
| 10 | 1e+7 |
| 20 | 2e+7 |
| 50 | 5e+7 |
| 100 | 1e+8 |
| 200 | 2e+8 |
| 500 | 5e+8 |
| 1000 | 1e+9 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from mGy to nGy?
1 mGy equals 1000000 nGy. To convert, multiply the value in milligrays by 1000000.
How do I convert 1 mGy to nGy?
1 mGy = 1.00000e+6 nGy. For any value, multiply by 1000000.
How do I convert nGy back to mGy?
Divide by the same factor — or equivalently, multiply by 1e-6. So 1 nGy = 1e-6 mGy.
When would I need to convert milligray to nanogray?
Radiation absorbed-dose conversions between mGy and nGy 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).