Radioactivity
GBqtokBq
Convert gigabecquerels (GBq) to kilobecquerels (kBq).
Factor1 GBq = 1000000 kBq
Converter
GBq
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kBq
Rendered to 6 significant figures.
Formula
Formula
kBq = GBq × 1000000
Multiply any value in gigabecquerels by 1000000 to obtain the value in kilobecquerels.
Worked example
Convert 1 GBq to kBq.
- 01Start with 1 GBq.
- 02Multiply by the conversion factor: 1 × 1000000 = 1.00000e+6 kBq.
Result1 GBq = 1.00000e+6 kBq
Conversion table
| GBq | kBq |
|---|---|
| 1 | 1.0000e+6 |
| 2 | 2.0000e+6 |
| 5 | 5.0000e+6 |
| 10 | 1e+7 |
| 20 | 2e+7 |
| 50 | 5e+7 |
| 100 | 1e+8 |
| 200 | 2e+8 |
| 500 | 5e+8 |
| 1000 | 1e+9 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from GBq to kBq?
1 GBq equals 1000000 kBq. To convert, multiply the value in gigabecquerels by 1000000.
How do I convert 1 GBq to kBq?
1 GBq = 1.00000e+6 kBq. For any value, multiply by 1000000.
How do I convert kBq back to GBq?
Divide by the same factor — or equivalently, multiply by 1e-6. So 1 kBq = 1e-6 GBq.
When would I need to convert gigabecquerel to kilobecquerel?
Radioactivity (activity) conversions between GBq and kBq are routine in health physics, nuclear medicine ordering, environmental monitoring, radiopharmacy and reactor/accelerator-source documentation. The becquerel (Bq) is the SI unit; the curie (Ci) is the legacy unit (1 Ci ≡ 3.7×10¹⁰ Bq exactly). This category is strictly activity (decays per second) — it does NOT cover absorbed dose (Gy, rad), dose equivalent (Sv, rem), exposure or dose rate, all of which are different physical quantities and live in separate categories.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).