Radiation Dose Equivalent Converter

Convert radiation dose equivalent between sieverts, rem, millisieverts, microsieverts, and millirems for reference.

Convert instantly

Enter a value and choose the units. Your answer updates as you type.

Value

From

Result

1000 Millisievert (mSv)

Educational reference only—not clinical or medical dosing advice. Dose decisions require a qualified radiation professional. Source: https://remm.hhs.gov/radmeasurement.htm

Quick reference

Sievert (Sv)1 base units
Millisievert (mSv)0.001 base units
Microsievert (µSv)0.000001 base units
Rem (rem)0.01 base units
Millirem (mrem)0.00001 base units

About the Radiation Dose Equivalent Converter

Dose equivalent expresses radiation effect with weighting factors and is reported in sieverts or rem. It is distinct from absorbed energy dose in gray and from source activity in becquerels. This page retains the standard SI relationship while keeping customary and legacy units explicit, which is important when a specification crosses disciplines.

Enter a value to see the conversion immediately—for example, 1 rem equals exactly 0.01 sievert. For a related check, use the Radiation Absorbed Dose Converter and Radiation Activity Converter; those tools describe a different but commonly connected quantity.

Frequently asked questions

What does the radiation dose equivalent measure?

Dose equivalent expresses radiation effect with weighting factors and is reported in sieverts or rem. It is distinct from absorbed energy dose in gray and from source activity in becquerels.

What is a useful reference conversion for radiation dose equivalent?

1 rem equals exactly 0.01 sievert.

Are the factors on this page exact?

SI prefixes and internationally defined units use their standard factors. Legacy and customary factors are retained at their published scientific definitions and may be rounded only for display.

Take this calculation further

Browse the converters calculators collection for more tools in this subject.

For a related calculation, use Radiation Activity Converter to convert radioactive activity between becquerels, curies, millicuries, megabecquerels, and microcuries. Alternatively, use Magnetic Flux Density Converter to convert magnetic flux density between tesla, gauss, millitesla, and microtesla using exact SI relationships.

For the underlying method, read A Quick Guide to Radiation Units for Students.