Radiation Converter
Enter a value below to convert between metric, imperial, and standard radiation units.
Convert Radiation
Enter a value and select the units to convert between sieverts, millisieverts, and microsieverts.
You can change the units using the dropdowns above or click on a unit button.
Common Radiation Reference Points
Here are some common radiation values in Sievert (Sv), Millisievert (mSv), and Microsievert (µSv). Click any preset value or arrow to load it into the converter.
| Description | Sievert (Sv) | Millisievert (mSv) | Microsievert (µSv) |
|---|---|---|---|
| 1 sievert unit | 1 | 1,000 | 1,000,000 |
| 5 sieverts | 5 | 5,000 | 5,000,000 |
| 10 sieverts benchmark | 10 | 10,000 | 10,000,000 |
| 25 sieverts | 25 | 25,000 | 25,000,000 |
| 50 sieverts | 50 | 50,000 | 50,000,000 |
| 100 sieverts reference | 100 | 100,000 | 100,000,000 |
Radiation Conversion Formulas
Use the following formulas to convert between sieverts, millisieverts, and microsieverts.
All radiation conversions are anchored to the international SI base unit (Sievert) for full scientific and engineering accuracy.
More Sievert & Millisievert Conversions
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Frequently Asked Questions
All Radiation Conversion Calculators (6)
Select any dedicated radiation pair below for worked examples and printable tables
Category Conversion Matrix
Simultaneous comparison of 5 units in this category
Radiation Unit Definitions & Symbols
Sievert (Sv)
SISI derived unit of ionizing radiation equivalent dose (1 Sv = 100 rem).
Millisievert (mSv)
METRICMedical imaging & dosimetry unit (1 mSv = 0.001 Sv = 100 mrem).
Microsievert (µSv)
METRICBackground radiation dosimetry unit (10⁻⁶ Sv = 0.1 mrem).
Rem (Roentgen Equivalent Man) (rem)
OTHERTraditional biological dose unit equal to 0.01 Sieverts (10 mSv).
Millirem (mrem)
OTHERUS occupational dosimetry unit (1 mrem = 10 µSv = 0.01 mSv).
References
- [1]NIST HB 133 StandardNIST (NIST HB 133 / SP 811)·Checking the Net Contents of Packaged Goods, Handbook 133 - 2019 Edition & NIST SP 811
- [2]BIPM SI BrochureBIPM (BIPM SI-9)·The International System of Units (SI Brochure, 9th Edition)
- [3]NIST SP 811 Appendix B.9NIST SP 811 (NIST SP 811 App. B.9)·NIST Guide to the SI, Appendix B.9: Factors for Units Listed by Kind of Quantity or Field of Science