Radiation - Dose Equivalent Converter
Dose equivalent adjusts absorbed dose for how biologically damaging each type of radiation is. The SI unit is the sievert (Sv); the older rem equals 0.01 Sv. Natural background radiation averages around 2.4 mSv per year worldwide.
1 Sievert = 100 Rem
How to convert Sievert to Rem
One Sievert equals 100 Rem, so multiply any value in Sv by 100 to get rem. To convert back, divide by 100 — or multiply by 0.01.
rem = Sv × 100
Example: 25 Sv × 100 = 2,500 rem.
Sievert to Rem table
| Sievert (Sv) | Rem (rem) |
|---|---|
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
| 4 | 400 |
| 5 | 500 |
| 10 | 1,000 |
| 15 | 1,500 |
| 20 | 2,000 |
| 25 | 2,500 |
| 50 | 5,000 |
| 75 | 7,500 |
| 100 | 10,000 |
| 250 | 25,000 |
| 500 | 50,000 |
| 1,000 | 100,000 |
Rem to Sievert table
| Rem (rem) | Sievert (Sv) |
|---|---|
| 1 | 0.01 |
| 2 | 0.02 |
| 3 | 0.03 |
| 4 | 0.04 |
| 5 | 0.05 |
| 10 | 0.1 |
| 15 | 0.15 |
| 20 | 0.2 |
| 25 | 0.25 |
| 50 | 0.5 |
| 75 | 0.75 |
| 100 | 1 |
| 250 | 2.5 |
| 500 | 5 |
| 1,000 | 10 |
Radiation - Dose Equivalent units at a glance
All 10 units this converter supports, each expressed in Sievert (Sv) and the other way round.
| Unit | Symbol | 1 unit in Sv | 1 Sv in unit |
|---|---|---|---|
| Sievert | Sv | 1 | 1 |
| Millisievert | mSv | 0.001 | 1,000 |
| Microsievert | µSv | 0.000001 | 1,000,000 |
| Nanosievert | nSv | 1e-9 | 1,000,000,000 |
| Kilosievert | kSv | 1,000 | 0.001 |
| Rem | rem | 0.01 | 100 |
| Millirem | mrem | 0.00001 | 100,000 |
| Microrem | µrem | 1e-8 | 100,000,000 |
| Joule/Kilogram | J/kg | 1 | 1 |
| Roentgen Equivalent Man | rem (man) | 0.01 | 100 |
Where radiation - dose equivalent conversions are used
Radiation protection limits for workers and the public, medical imaging doses, and aircrew exposure.
Frequently asked questions
What is 1 Sievert in Rem?
1 Sievert (Sv) is 100 Rem (rem).
What is 1 Rem in Sievert?
1 Rem (rem) is 0.01 Sievert (Sv).
How do I convert Sievert to Rem?
Multiply the value in Sievert by 100. For example, 5 Sv × 100 = 500 rem. To go the other way, divide by 100.
How many units does the radiation - dose equivalent converter support?
It converts between 10 units: Sievert, Millisievert, Microsievert, Nanosievert, Kilosievert, Rem, Millirem, Microrem, Joule/Kilogram, Roentgen Equivalent Man.
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Figures on this page are calculated with the same conversion factors as the converter above and shown to up to 10 significant figures. See our disclaimer before relying on a result in a professional or safety-critical context.