Radioactivity
MBqtoGBq
Convert megabecquerels (MBq) to gigabecquerels (GBq).
Factor1 MBq = 0.001 GBq
Converter
MBq
Accepts numbers or expressions, e.g. 150 + 14.7
Result
GBq
Rendered to 6 significant figures.
Formula
Formula
GBq = MBq × 0.001
Multiply any value in megabecquerels by 0.001 to obtain the value in gigabecquerels.
Worked example
Convert 1000 MBq to GBq.
- 01Start with 1000 MBq.
- 02Multiply by the conversion factor: 1000 × 0.001 = 1 GBq.
Result1000 MBq = 1 GBq
Conversion table
| MBq | GBq |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 200 | 0.2 |
| 500 | 0.5 |
| 1000 | 1 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from MBq to GBq?
1 MBq equals 0.001 GBq. To convert, multiply the value in megabecquerels by 0.001.
How do I convert 1 MBq to GBq?
1 MBq = 0.001 GBq. For any value, multiply by 0.001.
How do I convert GBq back to MBq?
Divide by the same factor — or equivalently, multiply by 1000. So 1 GBq = 1000 MBq.
When would I need to convert megabecquerel to gigabecquerel?
Radioactivity (activity) conversions between MBq and GBq 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).