Millirads to Centigrays Converter
Enter the absorbed radiation dose in millirads below to convert it to centigrays.
Convert Millirads to Centigrays
Enter a value in millirads (mrad) to convert to centigrays (cGy).
Millirad to Centigray Conversion Table
Table showing various millirad measurements converted to centigrays. Click any preset value or arrow to load it into the converter.
How to Convert Millirads to Centigrays
To convert millirads to centigrays, multiply the absorbed radiation dose by the following conversion ratio: 0.001 centigrays/millirad.
Since one millirad is equal to 0.001 centigrays, you can use this simple formula to convert:
The absorbed radiation dose in centigrays is equal to the absorbed radiation dose in millirads multiplied by 0.001.
For example, here's how to convert 5 millirads to centigrays using the formula above.
How Many Centigrays Are in a Millirad?
There are 0.001 centigrays in a millirad, which is why we use this value in the formula above.
Our millirad to centigray calculator automatically converts your absorbed radiation dose measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Millirads and centigrays 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 Centigray?
A centigray is a unit of absorbed radiation dose equal to 1/100 of a gray (0.01 Gy). Radiotherapy dose unit numerically equal to 1 rad (0.01 Gy). [2]
The centigray is classified as a metric and SI-compatible unit of absorbed radiation dose. Centigrays can be abbreviated as cGy; for example, 1 centigray can be written as 1 cGy.
In the metric system, "centi" is the standard SI prefix for hundredths, or 10⁻². This makes the centigray (cGy) a convenient decimal multiple of the gray (Gy).
In practice, centigrays (cGy) 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 centigrays (cGy), keep full floating-point precision (1 mrad = 0.001 cGy; 1 cGy = 1,000 mrad) during intermediate calculations and round only the final centigray figure to match your instrument tolerance.
More Millirad & Centigray Conversions
Need to calculate in the opposite direction? Use our centigrays to millirads calculator to switch your starting unit immediately. You can also explore related tools such as converting centigrays to millirads, converting grays to centigrays, or converting centigrays to grays.
Convert from Millirads
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Radiation-Absorbed Dose Metrology Standard — Millirads (mrad) to Centigrays (cGy)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Millirad (mrad) & Centigray (cGy)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (mrad to cGy)