Gigasievert is 1000000000 sievert units.
Gigasieverts to Terasieverts Converter — GSv to TSv
Convert Gigasievert (GSv) to Terasievert (TSv) using the exact conversion factor (1 gigasievert = 0.001 terasievert). See the formula, worked examples, and conversion table.
Gigasieverts 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+9 / 1e+12.
Equivalent Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Gigasieverts to Terasieverts
Gigasievert 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: Gigasievert is 1000000000 sievert units, and terasievert is 1000000000000 sievert units.
Formula
terasieverts = gigasieverts × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 gigasievert equals 1000000000 base units, and 1 terasievert equals 1e+12 base units, so dividing one by the other gives the direct gigasievert-to-terasievert factor of 0.001.
Simple example
1 GSv × 0.001 = 0.001 TSv
1 gigasievert = 0.001 terasieverts.
Real-world example
10 GSv × 0.001 = 0.01 TSv
10 gigasieverts = 0.01 terasieverts.
Conversion table
| Gigasievert (GSv) | Terasievert (TSv) |
|---|---|
| 0.001 GSv | 0.000001 TSv |
| 0.01 GSv | 0.00001 TSv |
| 0.1 GSv | 0.0001 TSv |
| 1 GSv | 0.001 TSv |
| 10 GSv | 0.01 TSv |
| 100 GSv | 0.1 TSv |
Reverse conversion: Terasievert to Gigasievert
0.001 TSv × 1000 = 1 GSv
0.001 terasieverts = 1 gigasievert.
gigasieverts = terasieverts × 1000
For a page dedicated to this direction, see Terasievert to Gigasievert.
Understanding the Gigasievert (GSv)
Gigasievert is 1000000000 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 gigasievert?
1 gigasievert equals 0.001 terasieverts, using the exact defined conversion factor rather than an estimate.
How do I convert gigasievert to terasievert?
Multiply the gigasievert value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert terasievert back to gigasievert?
Use the reverse factor: 1 terasievert equals 1,000 gigasieverts. You can also use the swap control in the converter above to flip the direction instantly.
What is a gigasievert?
Gigasievert (GSv) is a unit of radiation.
What is a terasievert?
Terasievert (TSv) is a unit of radiation.
Is the gigasievert to terasievert conversion exact?
Yes. Both gigasievert and terasievert are defined by fixed standards rather than physical artifacts, so the factor of 0.001 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.