Milligrays to Millirads Converter
Enter the absorbed radiation dose in milligrays below to convert it to millirads.
Convert Milligrays to Millirads
Enter a value in milligrays (mGy) to convert to millirads (mrad).
Milligray to Millirad Conversion Table
Table showing various milligray measurements converted to millirads. Click any preset value or arrow to load it into the converter.
| Milligrays (mGy) | Millirads (mrad) |
|---|---|
| 1 mGy | 100 mrad |
| 2 mGy | 200 mrad |
| 2.5 mGy | 250 mrad |
| 5 mGy | 500 mrad |
| 10 mGy | 1,000 mrad |
| 15 mGy | 1,500 mrad |
| 20 mGy | 2,000 mrad |
| 25 mGy | 2,500 mrad |
| 30 mGy | 3,000 mrad |
| 50 mGy | 5,000 mrad |
How to Convert Milligrays to Millirads
To convert milligrays to millirads, multiply the absorbed radiation dose by the following conversion ratio: 100 millirads/milligray.
Since one milligray is equal to 100 millirads, you can use this simple formula to convert:
The absorbed radiation dose in millirads is equal to the absorbed radiation dose in milligrays multiplied by 100.
For example, here's how to convert 5 milligrays to millirads using the formula above.
How Many Millirads Are in a Milligray?
There are 100 millirads in a milligray, which is why we use this value in the formula above.
Our milligray to millirad calculator automatically converts your absorbed radiation dose measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Milligrays and millirads are both units used to measure absorbed radiation dose. Keep reading to learn more about each unit.
What Is a Milligray?
A milligray is a unit of absorbed radiation dose equal to 1/1,000 of a gray (0.001 Gy). CT scan & diagnostic radiography absorbed dose unit (0.001 Gy). [1]
The milligray is classified as a metric and SI-compatible unit of absorbed radiation dose. Milligrays can be abbreviated as mGy; for example, 1 milligray can be written as 1 mGy.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the milligray (mGy) a convenient decimal multiple of the gray (Gy).
In practice, milligrays (mGy) are widely used across fine-tolerance laboratory, analytical, and micro-scale absorbed radiation dose measurements within SI metric workflows, engineering documentation, and technical data sheets.
What Is a Millirad?
A millirad is a unit of absorbed radiation dose equal to 1/100,000 of a gray (0.00001 Gy). One-thousandth of a rad (10 µGy). [2]
The millirad is classified as a standard unit of absorbed radiation dose. Millirads can be abbreviated as mrad; for example, 1 millirad can be written as 1 mrad.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the millirad (mrad) a convenient decimal multiple of the gray (Gy).
In practice, millirads (mrad) are widely used across fine-tolerance laboratory, analytical, and micro-scale absorbed radiation dose measurements within international standard workflows, engineering documentation, and technical data sheets.
When converting absorbed radiation dose between milligrays (mGy) and millirads (mrad), keep full floating-point precision (1 mGy = 100 mrad; 1 mrad = 0.01 mGy) during intermediate calculations and round only the final millirad figure to match your instrument tolerance.
More Milligray & Millirad Conversions
Need to calculate in the opposite direction? Use our millirads to milligrays calculator to switch your starting unit immediately. You can also explore related tools such as converting millirads to milligrays, converting milligrays to grays, or converting grays to centigrays.
Convert from Milligrays
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Radiation-Absorbed Dose Metrology Standard — Milligrays (mGy) to Millirads (mrad)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Milligray (mGy) & Millirad (mrad)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (mGy to mrad)