Millirads to Milligrays Converter
Enter the absorbed radiation dose in millirads below to convert it to milligrays.
Convert Millirads to Milligrays
Enter a value in millirads (mrad) to convert to milligrays (mGy).
Millirad to Milligray Conversion Table
Table showing various millirad measurements converted to milligrays. Click any preset value or arrow to load it into the converter.
How to Convert Millirads to Milligrays
To convert millirads to milligrays, multiply the absorbed radiation dose by the following conversion ratio: 0.01 milligrays/millirad.
Since one millirad is equal to 0.01 milligrays, you can use this simple formula to convert:
The absorbed radiation dose in milligrays is equal to the absorbed radiation dose in millirads multiplied by 0.01.
For example, here's how to convert 5 millirads to milligrays using the formula above.
How Many Milligrays Are in a Millirad?
There are 0.01 milligrays in a millirad, which is why we use this value in the formula above.
Our millirad to milligray calculator automatically converts your absorbed radiation dose measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Millirads and milligrays are both units used to measure absorbed radiation dose. Keep reading to learn more about each unit.
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). [1]
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.
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). [2]
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.
When converting absorbed radiation dose between millirads (mrad) and milligrays (mGy), keep full floating-point precision (1 mrad = 0.01 mGy; 1 mGy = 100 mrad) during intermediate calculations and round only the final milligray figure to match your instrument tolerance.
More Millirad & Milligray Conversions
Need to calculate in the opposite direction? Use our milligrays to millirads calculator to switch your starting unit immediately. You can also explore related tools such as converting milligrays to millirads, converting grays to milligrays, or converting grays to centigrays.
Convert from Millirads
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Radiation-Absorbed Dose Metrology Standard — Millirads (mrad) to Milligrays (mGy)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Millirad (mrad) & Milligray (mGy)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (mrad to mGy)