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Radiation (dose equivalent) converter
Biological dose — what a dosimeter badge reads. 5 units, converted from one table of exact factors.
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1 sievert in every other radiation (dose equivalent) unit
Computed by the same engine that runs the converter above, so these can never drift apart from it.
| From | Equals | Unit |
|---|---|---|
| 1 sievert | 1,000 | millisievert (mSv) |
| 1 sievert | 1,000,000 | microsievert (µSv) |
| 1 sievert | 100 | rem (rem) |
| 1 sievert | 100,000 | millirem (mrem) |
What each unit actually is
Most converters give you a number and stop. Where a figure is exact by definition we say so, and where it is an average or shifts with conditions we say that too — that is usually the thing you needed to know.
| Unit | Symbol | What it actually is |
|---|---|---|
| sievert | Sv | SI. A whole-body sievert is a serious dose. |
| millisievert | mSv | A chest CT is a few of these. |
| microsievert | µSv | A dental X-ray is a handful. |
| rem | rem | The old US unit. 100 rem make a sievert. |
| millirem | mrem |
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