Convert Centigrays to Micrograys (cGy to µGy)
1 centigray (cGy) = 10000 micrograys (µGy). 1 µGy = 0.0001 cGy. Example: 15 cGy = 15 × 10000 = 150000 µGy.
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1 cGy = 10000 µGy
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk centigray to microgray converter to paste a column from Excel.
How to Convert Centigray to Microgray
- 1 cGy = 10000 µGy
- 1 µGy = 0.0001 cGy
- Example: convert 15 cGy to µGy: 15 cGy = 15 × 10000 µGy = 150000 µGy
Formula
µGy = cGy × 10000
Derivation from SI units:
- 1 cGy = 0.01 Gy = 1 rad.
- 1 µGy = 10⁻⁶ Gy.
- 1 cGy = 0.01 Gy ÷ 0.000001 Gy per µGy = 10000 µGy
Both units are defined exactly, so the factor is exact. Centigray definition: centigray; Microgray definition: microgray.
Worked examples
- A reading of 100 cGy converts to 1000000 µGy.
100 cGy × 10000 = 1000000 µGy - A value of 500 cGy is 5000000 µGy.
500 cGy × 10000 = 5000000 µGy
Centigray to Microgray conversion table
| Centigrays (cGy) | Micrograys (µGy) |
|---|---|
| 1 cGy | 10000 µGy |
| 10 cGy | 100000 µGy |
| 50 cGy | 500000 µGy |
| 100 cGy | 1000000 µGy |
| 180 cGy | 1800000 µGy |
| 200 cGy | 2000000 µGy |
| 500 cGy | 5000000 µGy |
| 1000 cGy | 10000000 µGy |
| 5000 cGy | 50000000 µGy |
| 7000 cGy | 70000000 µGy |
Where it's used
Centigrays are used for radiotherapy plans (e.g. 200 cGy per fraction), while micrograys appear in dental and chest X-ray air kerma. Both measure absorbed dose of ionising radiation, so the conversion is a fixed factor.
Centigray to other absorbed dose units
| Conversion | 1 cGy equals |
|---|---|
| centigray to microgray | 10000 µGy |
| centigray to gray | 0.01 Gy |
| centigray to milligray | 10 mGy |
| centigray to rad | 1 rad |
| centigray to kilogray | 0.00001 kGy |
| centigray to millirad | 1000 mrad |
Frequently asked questions
How many micrograys are in 1 centigray?
1 cGy = 10000 µGy.
How do I convert centigrays to micrograys?
Multiply the value in cGy by 10000. For example, 15 cGy × 10000 = 150000 µGy.
Is the cGy to µGy conversion exact?
Yes. Both units are defined exactly, and 1 cGy is exactly 10000 µGy.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (becquerel, gray, sievert, lux) and Table 2 (candela).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Centigrays to Micrograys (cGy to µGy). Retrieved October 25, 2026, from https://scientificconverters.com/absorbed-dose/centigrays-to-micrograys/
IEEE
Scientific Converters, "Convert Centigrays to Micrograys (cGy to µGy)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/absorbed-dose/centigrays-to-micrograys/