Convert Micrograys to Kilograys (µGy to kGy)
1 microgray (µGy) = 1 × 10⁻⁹ kilograys (kGy). 1 kGy = 1000000000 µGy. Example: 15 µGy = 15 × 1 × 10⁻⁹ = 1.5 × 10⁻⁸ kGy.
Also searched as micrograys to kGy, micrograys in kGy, micrograys into kilograys, µGy to kGy, µGy in kilograys, µGy into kilogray, microgray to kilogray, µGy to kilograys converter and how many kilograys in a microgray.
1 µGy = 1e-9 kGy
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk microgray to kilogray converter to paste a column from Excel.
How to Convert Microgray to Kilogray
- 1 µGy = 1 × 10⁻⁹ kGy
- 1 kGy = 1000000000 µGy
- Example: convert 15 µGy to kGy: 15 µGy = 15 × 1 × 10⁻⁹ kGy = 1.5 × 10⁻⁸ kGy
Formula
kGy = µGy ÷ 1000000000
Derivation from SI units:
- 1 µGy = 10⁻⁶ Gy.
- 1 kGy = 10³ Gy.
- 1 µGy = 0.000001 Gy ÷ 1000 Gy per kGy = 1 × 10⁻⁹ kGy
Both units are defined exactly, so the factor is exact. Microgray definition: microgray; Kilogray definition: kilogray.
Worked examples
- A reading of 0.5 µGy converts to 5 × 10⁻¹⁰ kGy.
0.5 µGy × 1 × 10⁻⁹ = 5 × 10⁻¹⁰ kGy - A value of 5 µGy is 5 × 10⁻⁹ kGy.
5 µGy × 1 × 10⁻⁹ = 5 × 10⁻⁹ kGy
Microgray to Kilogray conversion table
| Micrograys (µGy) | Kilograys (kGy) |
|---|---|
| 0.001 µGy | 1 × 10⁻¹² kGy |
| 0.01 µGy | 1 × 10⁻¹¹ kGy |
| 0.1 µGy | 1 × 10⁻¹⁰ kGy |
| 0.5 µGy | 5 × 10⁻¹⁰ kGy |
| 1 µGy | 1 × 10⁻⁹ kGy |
| 2 µGy | 2 × 10⁻⁹ kGy |
| 5 µGy | 5 × 10⁻⁹ kGy |
| 10 µGy | 1 × 10⁻⁸ kGy |
| 50 µGy | 5 × 10⁻⁸ kGy |
| 100 µGy | 1 × 10⁻⁷ kGy |
Where it's used
Micrograys are used for dental and chest X-ray air kerma, while kilograys appear in sterilisation of medical devices (25 kGy). Both measure absorbed dose of ionising radiation, so the conversion is a fixed factor.
Microgray to other absorbed dose units
| Conversion | 1 µGy equals |
|---|---|
| microgray to kilogray | 1 × 10⁻⁹ kGy |
| microgray to gray | 0.000001 Gy |
| microgray to milligray | 0.001 mGy |
| microgray to rad | 0.0001 rad |
| microgray to centigray | 0.0001 cGy |
| microgray to millirad | 0.1 mrad |
Frequently asked questions
How many kilograys are in 1 microgray?
1 µGy = 1 × 10⁻⁹ kGy.
How do I convert micrograys to kilograys?
Multiply the value in µGy by 1 × 10⁻⁹, or divide it by 1000000000. For example, 15 µGy × 1 × 10⁻⁹ = 1.5 × 10⁻⁸ kGy.
Is the µGy to kGy conversion exact?
Yes. Both units are defined exactly, and 1 µGy is exactly 1 × 10⁻⁹ kGy.
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 Micrograys to Kilograys (µGy to kGy). Retrieved October 25, 2026, from https://scientificconverters.com/absorbed-dose/micrograys-to-kilograys/
IEEE
Scientific Converters, "Convert Micrograys to Kilograys (µGy to kGy)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/absorbed-dose/micrograys-to-kilograys/