Rontogray is 1e-27 gray units.
Rontogray to Femtosievert
Convert Rontogray (rGy) to Femtosievert (fSv) instantly. Free online radiation converter with formulas, tables and examples.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Radiation Converter
Convert radioactivity, absorbed dose, and equivalent dose units by compatible radiation family.
Context values
Some unit families need one extra value for a physically accurate result.
Femtosievert is 1e-15 sievert units.
fSv = rGy × 1e-12
Results update instantly for Rontogray to Femtosievert conversions.
Reserved above the conversion cards and below the converter.
Formula
1 Rontogray = 1e-12 Femtosievert
fSv = rGy × 1e-12
rGy = fSv ÷ 1e-12
Conversion table
| 1 rGy | 1e-12 fSv |
| 2 rGy | 2e-12 fSv |
| 5 rGy | 5e-12 fSv |
| 10 rGy | 1e-11 fSv |
| 20 rGy | 2e-11 fSv |
| 50 rGy | 5e-11 fSv |
| 100 rGy | 1e-10 fSv |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many Femtosieverts are in one Rontogray?
One Rontogray equals 1e-12 Femtosieverts.
How do I convert Rontogray to Femtosievert?
Multiply the number of Rontograys by 1e-12 to get Femtosieverts. To go the other way, multiply Femtosieverts by 1e+12 (or divide by 1e-12) to get Rontograys.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Rontogray and Femtosievert, so the result shown is mathematically precise (rounded only for display).
When is Rontogray to Femtosievert conversion commonly used?
It is commonly used in nuclear medicine, radiation safety, health physics, and scientific research involving radioactivity and radiation dose.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
Rontogray and Femtosievert are units used in the radiation family of measurements. Rontogray measures absorbed radiation dose (energy deposited per unit mass), while Femtosievert 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 Rontogray = 1e-12 Femtosieverts (equivalently 1 Femtosievert = 1e+12 Rontograys), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.