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Millirem to Millisievert Converter

1 millirem is exactly 0.01 millisieverts. Convert millirem (mrem) to millisieverts (mSv) below: type a value and the result updates as you type.

mrem to mSv calculator

Dot or comma decimals and scientific notation (1e-3) work.

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Result

Millirem to Millisievert conversion

1 mrem = 0.01 mSvone millirem in millisieverts

1 mSv = 100 mremone millisievert in millirem

Millirem (mrem): One thousandth of a rem: exactly 10 µSv.

Millisievert (mSv): One thousandth of a sievert. Natural background radiation is a few mSv per year.

Source:Millirem: NIST Special Publication 811 (2008), Appendix B.8; Millisievert: SI Brochure, 9th edition (BIPM, 2019)

How to convert millirem to millisieverts

To convert millirem to millisieverts, multiply the number of millirem by 0.01.

Formula

mSv = mrem × 0.01

Examples

  • 5 mrem = 5 × 0.01 = 0.05 mSv
  • 25 mrem = 25 × 0.01 = 0.25 mSv
  • 100 mrem = 100 × 0.01 = 1 mSv

Millirem to Millisievert conversion table

Millirem to Millisievert
Millirem (mrem)Millisievert (mSv)
0.1 mrem0.001 mSv
0.5 mrem0.005 mSv
1 mrem0.01 mSv
2 mrem0.02 mSv
3 mrem0.03 mSv
5 mrem0.05 mSv
10 mrem0.1 mSv
20 mrem0.2 mSv
25 mrem0.25 mSv
50 mrem0.5 mSv
100 mrem1 mSv
250 mrem2.5 mSv
500 mrem5 mSv
1000 mrem10 mSv

Values rounded to 10 significant digits where needed.

Frequently asked questions

How many millisieverts are in one millirem?
One millirem is exactly 0.01 millisieverts.
How do I convert millisieverts to millirem?
To convert millisieverts to millirem, multiply the number of millisieverts by 100. The formula is mrem = mSv × 100.
Is this conversion exact?
Yes. Both units have exact definitions and the factor 0.01 is exact. Displayed results are only rounded when they have many decimal places.
Which is larger, a millirem or a millisievert?
A millisievert is 100 times larger than a millirem. In other words, a millirem is exactly 1/100 of a millisievert.