Microsieverts to Millisieverts Converter
Enter the radiation dose in microsieverts below to convert it to millisieverts.
Convert Microsieverts to Millisieverts
Enter a value in microsieverts (µSv) to convert to millisieverts (mSv).
Microsievert to Millisievert Conversion Table
Table showing various microsievert measurements converted to millisieverts. Click any preset value or arrow to load it into the converter.
How to Convert Microsieverts to Millisieverts
To convert microsieverts to millisieverts, multiply the radiation dose by the following conversion ratio: 0.001 millisieverts/microsievert.
Since one microsievert is equal to 0.001 millisieverts, you can use this simple formula to convert:
The radiation dose in millisieverts is equal to the radiation dose in microsieverts multiplied by 0.001.
For example, here's how to convert 5 microsieverts to millisieverts using the formula above.
How Many Millisieverts Are in a Microsievert?
There are 0.001 millisieverts in a microsievert, which is why we use this value in the formula above.
Our microsievert to millisievert calculator automatically converts your radiation dose measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Microsieverts and millisieverts are both units used to measure radiation dose. Keep reading to learn more about each unit.
What Is a Microsievert?
A microsievert is a unit of radiation dose equal to 1/1,000,000 of a sievert (0.000001 Sv). Background radiation dosimetry unit (10⁻⁶ Sv = 0.1 mrem). [1]
The microsievert is classified as a metric and SI-compatible unit of radiation dose. Microsieverts can be abbreviated as µSv; for example, 1 microsievert can be written as 1 µSv.
In the metric system, "micro" is the standard SI prefix for millionths, or 10⁻⁶. This makes the microsievert (µSv) a convenient decimal multiple of the sievert (Sv).
In practice, microsieverts (µSv) are widely used across fine-tolerance laboratory, analytical, and micro-scale radiation dose measurements within SI metric 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 microsieverts (µSv) and millisieverts (mSv), keep full floating-point precision (1 µSv = 0.001 mSv; 1 mSv = 1,000 µSv) during intermediate calculations and round only the final millisievert figure to match your instrument tolerance.
More Microsievert & Millisievert Conversions
Need to calculate in the opposite direction? Use our millisieverts to microsieverts calculator to switch your starting unit immediately. You can also explore related tools such as converting millisieverts to microsieverts, converting sieverts to millisieverts, or converting microsieverts to sieverts.
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Radiation Metrology Standard — Microsieverts (µSv) to Millisieverts (mSv)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Microsievert (µSv) & Millisievert (mSv)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (µSv to mSv)