Convert Milligrays to Micrograys (mGy to µGy)
1 milligray (mGy) = 1000 micrograys (µGy). 1 µGy = 0.001 mGy. Example: 15 mGy = 15 × 1000 = 15000 µGy.
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1 mGy = 1000 µGy
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk milligray to microgray converter to paste a column from Excel.
How to Convert Milligray to Microgray
- 1 mGy = 1000 µGy
- 1 µGy = 0.001 mGy
- Example: convert 15 mGy to µGy: 15 mGy = 15 × 1000 µGy = 15000 µGy
Formula
µGy = mGy × 1000
Derivation from SI units:
- 1 mGy = 10⁻³ Gy.
- 1 µGy = 10⁻⁶ Gy.
- 1 mGy = 0.001 Gy ÷ 0.000001 Gy per µGy = 1000 µGy
Both units are defined exactly, so the factor is exact. Milligray definition: milligray; Microgray definition: microgray.
Worked examples
- A reading of 0.5 mGy converts to 500 µGy.
0.5 mGy × 1000 = 500 µGy - A value of 5 mGy is 5000 µGy.
5 mGy × 1000 = 5000 µGy
Milligray to Microgray conversion table
| Milligrays (mGy) | Micrograys (µGy) |
|---|---|
| 0.001 mGy | 1 µGy |
| 0.01 mGy | 10 µGy |
| 0.1 mGy | 100 µGy |
| 0.5 mGy | 500 µGy |
| 1 mGy | 1000 µGy |
| 2 mGy | 2000 µGy |
| 5 mGy | 5000 µGy |
| 10 mGy | 10000 µGy |
| 50 mGy | 50000 µGy |
| 100 mGy | 100000 µGy |
Where it's used
Milligrays are used for CT dose index (CTDIvol), 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.
Milligray to other absorbed dose units
| Conversion | 1 mGy equals |
|---|---|
| milligray to microgray | 1000 µGy |
| milligray to gray | 0.001 Gy |
| milligray to rad | 0.1 rad |
| milligray to centigray | 0.1 cGy |
| milligray to kilogray | 0.000001 kGy |
| milligray to millirad | 100 mrad |
Frequently asked questions
How many micrograys are in 1 milligray?
1 mGy = 1000 µGy.
How do I convert milligrays to micrograys?
Multiply the value in mGy by 1000. For example, 15 mGy × 1000 = 15000 µGy.
Is the mGy to µGy conversion exact?
Yes. Both units are defined exactly, and 1 mGy is exactly 1000 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 Milligrays to Micrograys (mGy to µGy). Retrieved October 25, 2026, from https://scientificconverters.com/absorbed-dose/milligrays-to-micrograys/
IEEE
Scientific Converters, "Convert Milligrays to Micrograys (mGy to µGy)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/absorbed-dose/milligrays-to-micrograys/