How to convert rems to microsieverts
µSv = rem × 10,000Multiply the value in rems by 10,000. To go the other way, multiply by 0.0001 (or divide by 10,000).
A rem is larger than a microsievert: one rem contains 10,000 microsieverts.
Worked examples
- 1 rem1 rem × 10,000 = 10,000 µSv
- 5 rems5 rem × 10,000 = 50,000 µSv
- 10 rems10 rem × 10,000 = 100,000 µSv
- 20 rems20 rem × 10,000 = 200,000 µSv
- 100 rems100 rem × 10,000 = 1,000,000 µSv
Rems to microsieverts conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Rems (rem) | Microsieverts (µSv) |
|---|---|
| 0.1 rem | 1,000 µSv |
| 0.25 rem | 2,500 µSv |
| 0.5 rem | 5,000 µSv |
| 1 rem | 10,000 µSv |
| 2 rem | 20,000 µSv |
| 3 rem | 30,000 µSv |
| 4 rem | 40,000 µSv |
| 5 rem | 50,000 µSv |
| 6 rem | 60,000 µSv |
| 7 rem | 70,000 µSv |
| 8 rem | 80,000 µSv |
| 9 rem | 90,000 µSv |
| 10 rem | 100,000 µSv |
| Rems (rem) | Microsieverts (µSv) |
|---|---|
| 12 rem | 120,000 µSv |
| 15 rem | 150,000 µSv |
| 20 rem | 200,000 µSv |
| 25 rem | 250,000 µSv |
| 30 rem | 300,000 µSv |
| 40 rem | 400,000 µSv |
| 50 rem | 500,000 µSv |
| 75 rem | 750,000 µSv |
| 100 rem | 1,000,000 µSv |
| 250 rem | 2,500,000 µSv |
| 500 rem | 5,000,000 µSv |
| 1,000 rem | 10,000,000 µSv |
About the units
Rem (rem)
“Roentgen equivalent man”: exactly 0.01 Sv.
Microsievert (µSv)
A dental X-ray is around 5 µSv. One microsievert equals 0.000001 sieverts (Sv).
Frequently asked questions
How many microsieverts are in one rem?
There are 10,000 microsieverts in one rem, and this value is exact by definition.
How do I convert rems to microsieverts?
Multiply the number of rems by 10,000. For example, 10 rem × 10,000 = 100,000 µSv.
How many rems are in one microsievert?
One microsievert equals 0.0001 rems. That is the reverse factor, 1 ÷ 10,000.
What is 10 rems in microsieverts?
10 rem = 100,000 µSv.
Is this rem to µSv converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.