Rem is 0.01 sievert.
Rems to Decasieverts Converter — rem to daSv
Convert Rem (rem) to Decasievert (daSv) using the exact conversion factor (1 rem = 0.001 decasievert). See the formula, worked examples, conversion table, and common uses.
Rems to Decasieverts converter
Converter
Radiation Converter
Convert radioactivity, absorbed dose, and equivalent dose units by compatible radiation family.
Context values
Some unit families need one extra value for a physically accurate result.
Decasievert is 10 sievert units.
Result = input x 0.01 / 10.
Equivalent Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Rems to Decasieverts
Rem and Decasievert both belong to the radiation-measurement family, though radiation quantities fall into genuinely distinct categories: absorbed dose (gray, rad) measures energy deposited in matter, equivalent dose (sievert, rem) weights that for biological harm, and activity (becquerel, curie) measures how often a radioactive source decays — this page only converts between units of the same kind. Rem is most often used for us occupational radiation dose limits and monitoring.
Formula
decasieverts = rems × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 rem equals 0.01 base units, and 1 decasievert equals 10 base units, so dividing one by the other gives the direct rem-to-decasievert factor of 0.001.
Simple example
1 rem × 0.001 = 0.001 daSv
1 rem = 0.001 decasieverts.
Real-world example
10 rem × 0.001 = 0.01 daSv
10 rems = 0.01 decasieverts.
Conversion table
| Rem (rem) | Decasievert (daSv) |
|---|---|
| 0.001 rem | 0.000001 daSv |
| 0.01 rem | 0.00001 daSv |
| 0.1 rem | 0.0001 daSv |
| 1 rem | 0.001 daSv |
| 10 rem | 0.01 daSv |
| 100 rem | 0.1 daSv |
Reverse conversion: Decasievert to Rem
0.001 daSv × 1000 = 1 rem
0.001 decasieverts = 1 rem.
rems = decasieverts × 1000
For a page dedicated to this direction, see Decasievert to Rem.
Understanding the Rem
Rem (rem) measures equivalent radiation dose. 'Roentgen equivalent man' — the US customary unit of equivalent radiation dose, fixed at exactly 0.01 sievert. It is classified as a non-SI unit, still common in the US.
Where it's used: Still widely used in the United States alongside the SI sievert
Rem vs. sievert. Both measure equivalent radiation dose; the sievert is the modern SI unit while the rem is the older US customary unit, related by 1 sievert = 100 rem exactly.
Uses of the Rem today
- US occupational radiation dose limits and monitoring
- US nuclear regulatory reporting
- US medical radiation dose records
Understanding the Decasievert (daSv)
Decasievert is 10 sievert units.
Rem — sources
- US NRC (Nuclear Regulatory Commission) — glossary — Definition and continued regulatory use of the rem in the United States.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decasieverts are in 1 rem?
1 rem equals 0.001 decasieverts, using the exact defined conversion factor rather than an estimate.
How do I convert rem to decasievert?
Multiply the rem value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert decasievert back to rem?
Use the reverse factor: 1 decasievert equals 1,000 rems. You can also use the swap control in the converter above to flip the direction instantly.
What is a rem?
Rem (rem) measures equivalent radiation dose. 'Roentgen equivalent man' — the US customary unit of equivalent radiation dose, fixed at exactly 0.01 sievert. It is classified as a non-SI unit, still common in the US.
What is a decasievert?
Decasievert (daSv) is a unit of radiation.
Is the rem to decasievert conversion exact?
Yes. 'Roentgen equivalent man' — the US customary unit of equivalent radiation dose, fixed at exactly 0.01 sievert. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between rem vs. sievert?
Both measure equivalent radiation dose; the sievert is the modern SI unit while the rem is the older US customary unit, related by 1 sievert = 100 rem exactly.
Where is the rem still used today?
Still widely used in the United States alongside the SI sievert