Popular absorbed radiation dose conversions
- Grays to rads1 Gy = 100 rad
- Grays to milligrays1 Gy = 1,000 mGy
- Grays to centigrays1 Gy = 100 cGy
- Rads to grays1 rad = 0.01 Gy
- Rads to milligrays1 rad = 10 mGy
- Rads to centigrays1 rad = 1 cGy
- Milligrays to grays1 mGy = 0.001 Gy
- Milligrays to rads1 mGy = 0.1 rad
- Milligrays to centigrays1 mGy = 0.1 cGy
- Centigrays to grays1 cGy = 0.01 Gy
- Centigrays to rads1 cGy = 1 rad
- Centigrays to milligrays1 cGy = 10 mGy
About absorbed radiation dose units
Absorbed dose is radiation energy deposited per unit mass: one gray is one joule per kilogram, and the older rad is 0.01 Gy (so 1 cGy = 1 rad). Radiotherapy plans are written in Gy or cGy.
Absorbed Radiation Dose unit reference
| Unit | Symbol | Value in Gy | System |
|---|---|---|---|
| Gray | Gy | 1 Gy | SI |
| Centigray | cGy | 0.01 Gy | SI |
| Milligray | mGy | 0.001 Gy | SI |
| Microgray | µGy | 0.000001 Gy | SI |
| Rad | rad | 0.01 Gy | CGS |
| Millirad | mrad | 0.00001 Gy | CGS |
| Erg per gram | erg/g | 0.0001 Gy | CGS |
Frequently asked questions
What is the SI unit of absorbed radiation dose?
This converter uses the gray (Gy) as its reference unit; every other unit is defined relative to it.
How many absorbed radiation dose units can I convert?
7 units are supported here, across SI, CGS systems. Every pair can be converted in both directions.
Does this absorbed radiation dose converter work offline?
Yes. Once the page has loaded, every calculation runs locally in your browser — nothing is sent to a server.