Sievert to Rem Converter — Equivalent Radiation Dose

Convert equivalent dose between sieverts, millisieverts, microsieverts, rems, and millirems.

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How this conversion works. Equivalent dose is converted through the sievert; the rem relation (1 Sv = 100 rem exactly) follows US NRC — Measuring Radiation. Unit conversion only — this does not assess dose, risk, or safety, and is not medical advice.

How to use

  1. Choose the units to convert from and to.
  2. Enter a value — the converted result updates instantly.
  3. Click Copy to copy the result to your clipboard.

Frequently asked questions

How do I convert millisievert to millirem?

1 millisievert = 100 millirem. Choose "Millisievert (mSv)" as From and "Millirem (mrem)" as To, type a value, and the result updates instantly.

How many mrem is 1 mSv?

100 mrem. US dose reports use mrem, international ones mSv — average US background exposure is ~620 mrem/year, i.e. 6.2 mSv.

Does converting Sv to rem change the health meaning?

No — both already include the radiation weighting factor. The conversion is purely numeric (×100). What it does not do is tell you whether a given dose is safe; that depends on context and regulation.

Is my data sent to a server?

No. Conversions run entirely in your browser using fixed factors — nothing is uploaded or logged.

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