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