Sievert is equivalent dose.
Sievert to Ronnagray
Convert Sievert (Sv) to Ronnagray (RGy) 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.
Ronnagray is 1e+27 gray units.
RGy = Sv × 1e-27
Results update instantly for Sievert to Ronnagray conversions.
Reserved above the conversion cards and below the converter.
Formula
1 Sievert = 1e-27 Ronnagray
RGy = Sv × 1e-27
Sv = RGy ÷ 1e-27
Conversion table
| 1 Sv | 1e-27 RGy |
| 2 Sv | 2e-27 RGy |
| 5 Sv | 5e-27 RGy |
| 10 Sv | 1e-26 RGy |
| 20 Sv | 2e-26 RGy |
| 50 Sv | 5e-26 RGy |
| 100 Sv | 1e-25 RGy |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many Ronnagrays are in one Sievert?
One Sievert equals 1e-27 Ronnagrays.
How do I convert Sievert to Ronnagray?
Multiply the number of Sieverts by 1e-27 to get Ronnagrays. To go the other way, multiply Ronnagrays by 1e+27 (or divide by 1e-27) to get Sieverts.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Sievert and Ronnagray, so the result shown is mathematically precise (rounded only for display).
When is Sievert to Ronnagray 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
Sievert and Ronnagray are units used in the radiation family of measurements. Sievert measures equivalent radiation dose (biological risk-weighted dose), while Ronnagray measures absorbed radiation dose (energy deposited per unit mass). This page provides the direct numeric ratio between the two units. This converter uses the precise relationship 1 Sievert = 1e-27 Ronnagrays (equivalently 1 Ronnagray = 1e+27 Sieverts), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.