Radiation Dose
Gytomrad
Convert grays (Gy) to millirads (mrad).
Factor1 Gy = 100000 mrad
Converter
Gy
Accepts numbers or expressions, e.g. 150 + 14.7
Result
mrad
Rendered to 6 significant figures.
Formula
Formula
mrad = Gy × 100000
Multiply any value in grays by 100000 to obtain the value in millirads.
Worked example
Convert 1 Gy to mrad.
- 01Start with 1 Gy.
- 02Multiply by the conversion factor: 1 × 100000 = 100000 mrad.
Result1 Gy = 100000 mrad
Conversion table
| Gy | mrad |
|---|---|
| 1 | 1.0000e+5 |
| 2 | 2.0000e+5 |
| 5 | 5.0000e+5 |
| 10 | 1.0000e+6 |
| 20 | 2.0000e+6 |
| 50 | 5.0000e+6 |
| 100 | 1e+7 |
| 200 | 2e+7 |
| 500 | 5e+7 |
| 1000 | 1e+8 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from Gy to mrad?
1 Gy equals 100000 mrad. To convert, multiply the value in grays by 100000.
How do I convert 1 Gy to mrad?
1 Gy = 100000 mrad. For any value, multiply by 100000.
How do I convert mrad back to Gy?
Divide by the same factor — or equivalently, multiply by 1e-5. So 1 mrad = 1e-5 Gy.
When would I need to convert gray to millirad?
Radiation absorbed-dose conversions between Gy and mrad 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).