Millisievert to Microsievert Converter
1 millisievert is exactly 1000 microsieverts. Convert millisieverts (mSv) to microsieverts (µSv) below: type a value and the result updates as you type.
mSv to µSv calculator
Result
Millisievert to Microsievert conversion
1 mSv = 1000 µSvone millisievert in microsieverts
1 µSv = 0.001 mSvone microsievert in millisieverts
Millisievert (mSv): One thousandth of a sievert. Natural background radiation is a few mSv per year.
Microsievert (µSv): One millionth of a sievert. Dosimeters and Geiger counters often show µSv or µSv/h.
Source:SI Brochure, 9th edition (BIPM, 2019)
How to convert millisieverts to microsieverts
To convert millisieverts to microsieverts, multiply the number of millisieverts by 1000.
Formula
µSv = mSv × 1000
Examples
- 5 mSv = 5 × 1000 = 5000 µSv
- 25 mSv = 25 × 1000 = 25000 µSv
- 100 mSv = 100 × 1000 = 100000 µSv
Millisievert to Microsievert conversion table
| Millisievert (mSv) | Microsievert (µSv) |
|---|---|
| 0.1 mSv | 100 µSv |
| 0.5 mSv | 500 µSv |
| 1 mSv | 1000 µSv |
| 2 mSv | 2000 µSv |
| 3 mSv | 3000 µSv |
| 5 mSv | 5000 µSv |
| 10 mSv | 10000 µSv |
| 20 mSv | 20000 µSv |
| 25 mSv | 25000 µSv |
| 50 mSv | 50000 µSv |
| 100 mSv | 100000 µSv |
| 250 mSv | 250000 µSv |
| 500 mSv | 500000 µSv |
| 1000 mSv | 1000000 µSv |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many microsieverts are in one millisievert?
- One millisievert is exactly 1000 microsieverts.
- How do I convert microsieverts to millisieverts?
- To convert microsieverts to millisieverts, multiply the number of microsieverts by 0.001. The formula is mSv = µSv × 0.001.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 1000 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a millisievert or a microsievert?
- A millisievert is 1000 times larger than a microsievert. In other words, a microsievert is exactly 1/1000 of a millisievert.