Radioactivity
GBqtoMBq
Convert gigabecquerels (GBq) to megabecquerels (MBq).
Factor1 GBq = 1000 MBq
Converter
GBq
Accepts numbers or expressions, e.g. 150 + 14.7
Result
MBq
Rendered to 6 significant figures.
Formula
Formula
MBq = GBq × 1000
Multiply any value in gigabecquerels by 1000 to obtain the value in megabecquerels.
Worked example
Convert 1 GBq to MBq.
- 01Start with 1 GBq.
- 02Multiply by the conversion factor: 1 × 1000 = 1000 MBq.
Result1 GBq = 1000 MBq
Conversion table
| GBq | MBq |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 1.0000e+5 |
| 200 | 2.0000e+5 |
| 500 | 5.0000e+5 |
| 1000 | 1.0000e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from GBq to MBq?
1 GBq equals 1000 MBq. To convert, multiply the value in gigabecquerels by 1000.
How do I convert 1 GBq to MBq?
1 GBq = 1000 MBq. For any value, multiply by 1000.
How do I convert MBq back to GBq?
Divide by the same factor — or equivalently, multiply by 0.001. So 1 MBq = 0.001 GBq.
When would I need to convert gigabecquerel to megabecquerel?
Radioactivity (activity) conversions between GBq and MBq 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).