Millisieverts to millirems

Type a value in millisieverts to see it in millirems straight away, or type in the second box to convert back.

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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.

How to use it

  1. Type the value in the millisieverts box.
  2. Read the result in millirems as you type, and pick the precision you need.
  3. Swap the direction to convert back, or copy the result.

How it is calculated

mrem = mSv × 100

Multiply the value in millisieverts by 100 to get millirems.

Example

To convert 25 mSv to millirems: 25 × 100 = 2,500 mrem.

Conversion table

Millisieverts (mSv)Millirems (mrem)
1100
2200
3300
5500
101,000
202,000
252,500
505,000
10010,000
25025,000
50050,000
1,000100,000

About the units

Millisievert
A millisievert is exactly one thousandth of a sievert, the usual unit for medical imaging doses and occupational limits.
Millirem
A millirem is one thousandth of a rem, exactly 0.01 millisievert.

Limits and caveats

  • Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
  • Both unit factors are exact by their official definitions.

Questions about this tool

How many millirems are in one millisievert?

1 mSv = 100 mrem exactly.

How do I convert millisieverts to millirems?

Use mrem = mSv × 100. For example, 25 mSv = 2,500 mrem.

How many millisieverts are in one millirem?

1 mrem = 0.01 mSv.

How many millirems are in a millisievert?

One millisievert is exactly 100 millirems, because one sievert equals 100 rems.

Can sieverts be converted to becquerels?

No. Becquerels measure how active a radioactive source is, while sieverts measure the dose effect on the body. Linking them needs the isotope, exposure time and exposure route.