Radiation Dose
mradtoGy
Convert millirads (mrad) to grays (Gy).
Factor1 mrad = 1e-5 Gy
Converter
mrad
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Gy
Rendered to 6 significant figures.
Formula
Formula
Gy = mrad × 1e-5
Multiply any value in millirads by 1e-5 to obtain the value in grays.
Worked example
Convert 100000 mrad to Gy.
- 01Start with 100000 mrad.
- 02Multiply by the conversion factor: 100000 × 1e-5 = 1 Gy.
Result100000 mrad = 1 Gy
Conversion table
| mrad | Gy |
|---|---|
| 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 mrad to Gy?
1 mrad equals 1e-5 Gy. To convert, multiply the value in millirads by 1e-5.
How do I convert 1 mrad to Gy?
1 mrad = 1e-5 Gy. For any value, multiply by 1e-5.
How do I convert Gy back to mrad?
Divide by the same factor — or equivalently, multiply by 100000. So 1 Gy = 100000 mrad.
When would I need to convert millirad to gray?
Radiation absorbed-dose conversions between mrad and Gy 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).