Gigabecquerel (GBq)
A gigabecquerel is 10⁹ decays per second, about 27 millicuries. Therapy doses and industrial sources are in GBq.
Symbol: GBq
Quantity: activity of a radioactive source
SI relation: 1 GBq = 1000000000 Bq (exact)
Derivation: 1 GBq = 10⁹ Bq.
Exact: yes, by definition
Typical uses
- Radioiodine therapy (1–7 GBq)
- Industrial radiography sources
- Tc-99m generators
Convert gigabecquerels to other units
| Conversion | 1 GBq equals | Reverse |
|---|---|---|
| gigabecquerel to becquerel | 1000000000 Bq | becquerel to gigabecquerel |
| gigabecquerel to curie | 0.02702702703 Ci | curie to gigabecquerel |
| gigabecquerel to megabecquerel | 1000 MBq | megabecquerel to gigabecquerel |
| gigabecquerel to millicurie | 27.02702703 mCi | millicurie to gigabecquerel |
| gigabecquerel to picocurie | 27027027030 pCi | picocurie to gigabecquerel |
| gigabecquerel to kilobecquerel | 1000000 kBq | kilobecquerel to gigabecquerel |
| gigabecquerel to microcurie | 27027.02703 µCi | microcurie to gigabecquerel |
| gigabecquerel to disintegration per minute | 60000000000 dpm | disintegration per minute to gigabecquerel |
| gigabecquerel to terabecquerel | 0.001 TBq | terabecquerel to gigabecquerel |
| gigabecquerel to nanocurie | 27027027.03 nCi | nanocurie to gigabecquerel |
| gigabecquerel to rutherford | 1000 Rd | rutherford to gigabecquerel |
Open the Radioactivity Converter to convert any value between all units.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (becquerel, gray, sievert, lux) and Table 2 (candela).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Gigabecquerel (GBq). Retrieved October 25, 2026, from https://scientificconverters.com/units/gigabecquerel/
IEEE
Scientific Converters, "Gigabecquerel (GBq)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/gigabecquerel/