Sieverts to Millisieverts Converter
Enter the radiation dose in sieverts below to convert it to millisieverts.
Convert Sieverts to Millisieverts
Enter a value in sieverts (Sv) to convert to millisieverts (mSv).
Sievert to Millisievert Conversion Table
Table showing various sievert measurements converted to millisieverts. Click any preset value or arrow to load it into the converter.
| Sieverts (Sv) | Millisieverts (mSv) |
|---|---|
| 1 Sv | 1,000 mSv |
| 2 Sv | 2,000 mSv |
| 5 Sv | 5,000 mSv |
| 10 Sv | 10,000 mSv |
| 15 Sv | 15,000 mSv |
| 20 Sv | 20,000 mSv |
| 25 Sv | 25,000 mSv |
| 30 Sv | 30,000 mSv |
| 50 Sv | 50,000 mSv |
| 75 Sv | 75,000 mSv |
How to Convert Sieverts to Millisieverts
To convert sieverts to millisieverts, multiply the radiation dose by the following conversion ratio: 1,000 millisieverts/sievert.
Since one sievert is equal to 1,000 millisieverts, you can use this simple formula to convert:
The radiation dose in millisieverts is equal to the radiation dose in sieverts multiplied by 1,000.
For example, here's how to convert 10 sieverts to millisieverts using the formula above.
How Many Millisieverts Are in a Sievert?
There are 1,000 millisieverts in a sievert, which is why we use this value in the formula above.
Our sievert to millisievert calculator automatically converts your radiation dose measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Sieverts and millisieverts are both units used to measure radiation dose. Keep reading to learn more about each unit.
What Is a Sievert?
SI derived unit of ionizing radiation equivalent dose (1 Sv = 100 rem). It serves as a primary reference unit for measuring radiation dose across scientific and practical applications. [1]
The sievert is classified as an International System of Units (SI) unit of radiation dose. Sieverts can be abbreviated as Sv; for example, 1 sievert can be written as 1 Sv.
As the primary coherent reference unit for radiation dose in this category, all other radiation dose units are mathematically anchored to the sievert (Sv).
In practice, sieverts (Sv) are widely used across standard radiation dose applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
What Is a Millisievert?
A millisievert is a unit of radiation dose equal to 1/1,000 of a sievert (0.001 Sv). Medical imaging & dosimetry unit (1 mSv = 0.001 Sv = 100 mrem). [2]
The millisievert is classified as a metric and SI-compatible unit of radiation dose. Millisieverts can be abbreviated as mSv; for example, 1 millisievert can be written as 1 mSv.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the millisievert (mSv) a convenient decimal multiple of the sievert (Sv).
In practice, millisieverts (mSv) are widely used across fine-tolerance laboratory, analytical, and micro-scale radiation dose measurements within SI metric workflows, engineering documentation, and technical data sheets.
When converting radiation dose between sieverts (Sv) and millisieverts (mSv), keep full floating-point precision (1 Sv = 1,000 mSv; 1 mSv = 0.001 Sv) during intermediate calculations and round only the final millisievert figure to match your instrument tolerance.
More Sievert & Millisievert Conversions
Need to calculate in the opposite direction? Use our millisieverts to sieverts converter (mSv to Sv) to switch your starting unit immediately. You can also explore related tools such as converting sieverts to microsieverts, converting sieverts to rem, or converting microsieverts to sieverts.
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Radiation Metrology Standard — Sieverts (Sv) to Millisieverts (mSv)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Sievert (Sv) & Millisievert (mSv)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (Sv to mSv)