Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
Sieverts to Rem
Convert Sv to rem instantly, then review the formula, assumptions, and rounding guidance.
Radiation unitsInstant result
Decimals
Formula result = input × 1 ÷ 0.01. 1 Sv = 100 rem
Common examples
One value, several units
Millisieverts1,000 mSv
Microsieverts1,000,000 µSv
Rem100 rem
Conversion table
| Sv | rem |
|---|---|
| 1 Sv | 100 rem |
| 2 Sv | 200 rem |
| 5 Sv | 500 rem |
| 10 Sv | 1,000 rem |
| 25 Sv | 2,500 rem |
| 50 Sv | 5,000 rem |
| 100 Sv | 10,000 rem |
Conversion chart
1 Sv100 rem
5 Sv500 rem
10 Sv1,000 rem
25 Sv2,500 rem
50 Sv5,000 rem
Worked example
1 sievert equals 100 rem.
Unit definition
Sieverts (Sv) One sieverts equals 1 sievert.
Unit history
Sieverts is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert Sv to sievert.
3. Convert the base value to rem and apply your display precision.
Important
Equivalent dose already includes the applicable radiation weighting factor.
Understand the result before using it
Sieverts to Rem converts a value measured in Sieverts (Sv) into the equivalent value in Rem (rem). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 1 ÷ 0.01
Assumptions
- Sieverts and Rem represent the same equivalent dose quantity.
- The input is expressed in Sv; the output is expressed in rem.
- Equivalent dose already includes the applicable radiation weighting factor.
Worked example
1 Sv = 100 rem. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a Sv measurement in a document that expects rem.
- Compare a sieverts value with a value reported in rem.
- Check the Sv-to-rem arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Absorbed dose, equivalent dose, and activity describe different radiation quantities and are not interchangeable.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Sieverts to Rem?
result = input × 1 ÷ 0.01 Using the displayed relationship, 1 Sv equals 100 rem.
How many Rem are in one Sieverts?
One Sieverts is 100 Rem. The displayed digits may be rounded.
Can I reverse the Sv to rem conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts rem back to Sv.
Is the Sieverts to Rem result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.