Radiation Absorbed Dose (Gray) converter
Convert mGy to µGy — milligray to microgray
Convert milligrays (mGy) to micrograys (µGy) instantly. 1 mGy = 1,000 µGy. Free calculator with formula, conversion table, and Gy base-unit equivalent.
Also searched as: mGy to uGy, milli gray to micro gray, milli to micro gray, milli grays to micro grays.
- Scientific Notation
- 1 × 10⁴ µGy
- Real-World Context
- 1 mGy is roughly the CT scan absorbed dose
- Step-by-Step
- 1. Start with 10 mGy. 2. Since 1 milli-unit = 1,000 micro-units, multiply by 1,000. 3. 10 × 1,000 = 10,000 µGy.
- Formula Used
- × 1,000 (milli = 10⁻³, micro = 10⁻⁶)
Quick Conversions
| Mega | 1 × 10⁻⁸ MGy |
|---|---|
| Kilo | 0.00001 kGy |
| Base Unit (grays) | 0.01 grays |
| Nano | 10,000,000 nGy |
| Pico | 1 × 10¹⁰ pGy |
Quick mGy to µGy answer
1 mGy = 1,000 µGy
multiply by 1,000
10 mGy = 10,000 µGy
milligray to microgray formula
Milli is 10^-3 and micro is 10^-6. They are three powers of ten apart, so every mGy to µGy conversion uses the exact factor 1,000.
µGy = mGy × 1,000
10 mGy × 1,000 = 10,000 µGymGy to µGy table
Common values for milligrays converted to micrograysand the base unit (Gy).
| milligrays | micrograys | grays |
|---|---|---|
| 0.001 mGy | 1 µGy | 0.000001 Gy |
| 0.01 mGy | 10 µGy | 0.00001 Gy |
| 0.1 mGy | 100 µGy | 0.0001 Gy |
| 1 mGy | 1,000 µGy | 0.001 Gy |
| 2 mGy | 2,000 µGy | 0.002 Gy |
| 5 mGy | 5,000 µGy | 0.005 Gy |
| 10 mGy | 10,000 µGy | 0.01 Gy |
| 20 mGy | 20,000 µGy | 0.02 Gy |
| 50 mGy | 50,000 µGy | 0.05 Gy |
| 100 mGy | 100,000 µGy | 0.1 Gy |
| 1,000 mGy | 1,000,000 µGy | 1 Gy |
Understanding milligrays and micrograys
A milligray (mGy) is 10⁻³ of the base unit (gray) and a microgray (µGy) is 10⁻⁶. They sit three powers of ten apart, so going from mGy to µGy means multiplying by exactly 1,000 — move the decimal point three places to the right.
Milligrays measure absorbed dose in diagnostic imaging: fluoroscopy skin dose, CT dose index, and interventional procedure tracking are all reported in mGy. Deterministic skin effects begin around 2000 mGy, which is why long procedures are logged cumulatively.
This calculator shifts the decimal exponent rather than multiplying in binary floating point, so 10 mGy returns exactly 10,000 µGy — not a value with a trailing rounding error.
Common mGy to µGy mistake
Gray is absorbed energy; sievert is biologically weighted. For X-rays and gamma the weighting factor is 1, so the numbers coincide, but for alpha it is 20 — treating mGy and mSv as the same unit is only safe for photons.
When to use mGy vs µGy
milligrays and micrograys are used in radiation therapy dosing, diagnostic radiology (fluoroscopy, CT scans), and radiobiology. Use the larger milli unit when the number becomes easier to scan, and the smaller micro unit when you need finer detail.