Femtogray is 1e-15 gray units.
Femtogray to Microsievert
Convert Femtogray (fGy) to Microsievert (uSv) instantly. Free online radiation converter with formulas, tables and examples.
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Convert radioactivity, absorbed dose, and equivalent dose units by compatible radiation family.
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Some unit families need one extra value for a physically accurate result.
Microsievert is 0.000001 sievert units.
uSv = fGy × 1e-9
Results update instantly for Femtogray to Microsievert conversions.
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Formula
1 Femtogray = 1e-9 Microsievert
uSv = fGy × 1e-9
fGy = uSv ÷ 1e-9
Conversion table
| 1 fGy | 1e-9 uSv |
| 2 fGy | 2e-9 uSv |
| 5 fGy | 5e-9 uSv |
| 10 fGy | 1e-8 uSv |
| 20 fGy | 2e-8 uSv |
| 50 fGy | 5e-8 uSv |
| 100 fGy | 1e-7 uSv |
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Frequently asked questions
How many Microsieverts are in one Femtogray?
One Femtogray equals 1e-9 Microsieverts.
How do I convert Femtogray to Microsievert?
Multiply the number of Femtograys by 1e-9 to get Microsieverts. To go the other way, multiply Microsieverts by 1e+9 (or divide by 1e-9) to get Femtograys.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Femtogray and Microsievert, so the result shown is mathematically precise (rounded only for display).
When is Femtogray to Microsievert conversion commonly used?
It is commonly used in nuclear medicine, radiation safety, health physics, and scientific research involving radioactivity and radiation dose.
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About this conversion
Femtogray and Microsievert are units used in the radiation family of measurements. Femtogray measures absorbed radiation dose (energy deposited per unit mass), while Microsievert measures equivalent radiation dose (biological risk-weighted dose). This page provides the direct numeric ratio between the two units. This converter uses the precise relationship 1 Femtogray = 1e-9 Microsieverts (equivalently 1 Microsievert = 1e+9 Femtograys), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.