Milligrays to Rads Converter
Enter the absorbed radiation dose in milligrays below to convert it to rads.
Convert Milligrays to Rads
Enter a value in milligrays (mGy) to convert to rads (rad).
Milligray to Rad Conversion Table
Table showing various milligray measurements converted to rads. Click any preset value or arrow to load it into the converter.
How to Convert Milligrays to Rads
To convert milligrays to rads, multiply the absorbed radiation dose by the following conversion ratio: 0.1 rads/milligray.
Since one milligray is equal to 0.1 rads, you can use this simple formula to convert:
The absorbed radiation dose in rads is equal to the absorbed radiation dose in milligrays multiplied by 0.1.
For example, here's how to convert 5 milligrays to rads using the formula above.
How Many Rads Are in a Milligray?
There are 0.1 rads in a milligray, which is why we use this value in the formula above.
Our milligray to rad calculator automatically converts your absorbed radiation dose measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Milligrays and rads 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 Rad?
A rad is a unit of absorbed radiation dose equal to 1/100 of a gray (0.01 Gy). CGS absorbed dose unit equal to 100 erg/g or 0.01 Gray (1 cGy). [2]
The rad is classified as a standard unit of absorbed radiation dose. Rads can be abbreviated as rad; for example, 1 rad can be written as 1 rad.
When working with rads (rad) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, rads (rad) 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 rads (rad), keep full floating-point precision (1 mGy = 0.1 rad; 1 rad = 10 mGy) during intermediate calculations and round only the final rad figure to match your instrument tolerance.
More Milligray & Rad Conversions
Need to calculate in the opposite direction? Use our rads to milligrays calculator to switch your starting unit immediately. You can also explore related tools such as converting rads to milligrays, converting milligrays to grays, or converting grays to centigrays.
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Radiation-Absorbed Dose Metrology Standard — Milligrays (mGy) to Rads (rad)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Milligray (mGy) & Rad (Radiation Absorbed Dose) (rad)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (mGy to rad)