Unit converter

Radiation Dose Converter

Dose equivalent and effective-dose units expressed in sieverts and SI-prefixed sieverts.

LOCAL
1,000 mSv
1 Sv = 1,000 mSv
Defined conversion

Multi-convert

1,000 mSvMillisievert
1,000,000 µSvMicrosievert
1,000,000,000 nSvNanosievert

Supported units

All factors come from the central conversion registry.

UnitSymbolSystemDefinition
SievertSvSI1 Sv = 1 J/kg for the defined dose quantities
MillisievertmSvSI1 mSv = 0.001 Sv
MicrosievertµSvSI1 µSv = 0.000001 Sv
NanosievertnSvSI1 nSv = 0.000000001 Sv

How radiation dose conversion works

Dose equivalent and effective-dose units expressed in sieverts and SI-prefixed sieverts.

The interactive calculator, reference table and indexed pair pages all read from the same conversion registry, so unit definitions and formulas stay synchronized.

Sv measures dose, not source activity

Sieverts describe dose equivalent or effective dose. They are not interchangeable with becquerels, which describe radioactive activity.

Read: Bq to Sv explained

Conversion history
Stored only on this device.