Megasievert is 1000000 sievert units.
Megasieverts to Terasieverts Converter — MSv to TSv
Convert Megasievert (MSv) to Terasievert (TSv) using the exact conversion factor (1 megasievert = 0.000001 terasievert). See the formula, worked examples, and conversion table.
Megasieverts to Terasieverts 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.
Terasievert is 1000000000000 sievert units.
Result = input x 1e+6 / 1e+12.
Equivalent Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Megasieverts to Terasieverts
Megasievert and Terasievert 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. Specifically: Megasievert is 1000000 sievert units, and terasievert is 1000000000000 sievert units.
Formula
terasieverts = megasieverts × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 megasievert equals 1000000 base units, and 1 terasievert equals 1e+12 base units, so dividing one by the other gives the direct megasievert-to-terasievert factor of 0.000001.
Simple example
1 MSv × 0.000001 = 0.000001 TSv
1 megasievert = 0.000001 terasieverts.
Real-world example
10 MSv × 0.000001 = 0.00001 TSv
10 megasieverts = 0.00001 terasieverts.
Conversion table
| Megasievert (MSv) | Terasievert (TSv) |
|---|---|
| 0.001 MSv | 1e-9 TSv |
| 0.01 MSv | 1e-8 TSv |
| 0.1 MSv | 1e-7 TSv |
| 1 MSv | 0.000001 TSv |
| 10 MSv | 0.00001 TSv |
| 100 MSv | 0.0001 TSv |
Reverse conversion: Terasievert to Megasievert
0.000001 TSv × 1000000 = 1 MSv
0.000001 terasieverts = 1 megasievert.
megasieverts = terasieverts × 1000000
For a page dedicated to this direction, see Terasievert to Megasievert.
Understanding the Megasievert (MSv)
Megasievert is 1000000 sievert units.
Understanding the Terasievert (TSv)
Terasievert is 1000000000000 sievert units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many terasieverts are in 1 megasievert?
1 megasievert equals 0.000001 terasieverts, using the exact defined conversion factor rather than an estimate.
How do I convert megasievert to terasievert?
Multiply the megasievert value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert terasievert back to megasievert?
Use the reverse factor: 1 terasievert equals 1,000,000 megasieverts. You can also use the swap control in the converter above to flip the direction instantly.
What is a megasievert?
Megasievert (MSv) is a unit of radiation.
What is a terasievert?
Terasievert (TSv) is a unit of radiation.
Is the megasievert to terasievert conversion exact?
Yes. Both megasievert and terasievert are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 used above is exact to as many digits as you choose to display.
What's the difference between absorbed dose, equivalent dose, and activity?
Absorbed dose (gray, rad) measures the energy radiation deposits in matter. Equivalent dose (sievert, rem) adjusts that figure for how harmful different types of radiation are to biological tissue. Activity (becquerel, curie) measures how often a radioactive source decays, independent of how much dose a person actually receives from it.