Megasievert is 1000000 sievert units.
Megasievert to Gigasievert
Convert Megasievert (MSv) to Gigasievert (GSv) 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.
Gigasievert is 1000000000 sievert units.
GSv = MSv × 0.001
Results update instantly for Megasievert to Gigasievert conversions.
Reserved above the conversion cards and below the converter.
Formula
1 Megasievert = 0.001 Gigasievert
GSv = MSv × 0.001
MSv = GSv ÷ 0.001
Conversion table
| 1 MSv | 0.001 GSv |
| 2 MSv | 0.002 GSv |
| 5 MSv | 0.005 GSv |
| 10 MSv | 0.01 GSv |
| 20 MSv | 0.02 GSv |
| 50 MSv | 0.05 GSv |
| 100 MSv | 0.1 GSv |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many Gigasieverts are in one Megasievert?
One Megasievert equals 0.001 Gigasieverts.
How do I convert Megasievert to Gigasievert?
Multiply the number of Megasieverts by 0.001 to get Gigasieverts. To go the other way, multiply Gigasieverts by 1000 (or divide by 0.001) to get Megasieverts.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Megasievert and Gigasievert, so the result shown is mathematically precise (rounded only for display).
When is Megasievert to Gigasievert 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
Megasievert and Gigasievert are units used in the radiation family of measurements. Both units measure equivalent radiation dose (biological risk-weighted dose). This converter uses the precise relationship 1 Megasievert = 0.001 Gigasieverts (equivalently 1 Gigasievert = 1000 Megasieverts), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.