Convert Megabecquerels to Femtobecquerels
Convert Megabecquerels (MBq) to Femtobecquerels (fBq) instantly and accurately.
Conversion Formula
fBq = MBq × 1.000000000e+21
About Megabecquerels
The megabecquerel (MBq) equals 10⁶ Bq and is the standard clinical nuclear medicine unit outside the US. ⁹⁹mTc bone scans use 740 MBq; ¹⁸F-FDG PET scans use 370 MBq; ¹³¹I diagnostic thyroid scans use 185-370 MBq. European and Australian protocols specify all doses in MBq. 1 MBq = 10⁶ Bq.
About Femtobecquerels
The femtobecquerel (fBq) equals 10⁻¹⁵ Bq, used in accelerator mass spectrometry (AMS) to quantify cosmogenic radionuclides (¹⁰Be, ³⁶Cl) in ice cores and geological samples. Ultra-low-background counting in deep underground laboratories reaches the fBq/kg level for solar neutrino detector purity assessment. 1 fBq = 10⁻¹⁵ Bq = 10⁻³ pBq.
Quick Reference Table
| Megabecquerels (MBq) | Femtobecquerels (fBq) |
|---|---|
| 1 MBq | 1 × 1021 fBq |
| 2 MBq | 2 × 1021 fBq |
| 5 MBq | 5 × 1021 fBq |
| 10 MBq | 1 × 1022 fBq |
| 25 MBq | 2.5 × 1022 fBq |
| 50 MBq | 5 × 1022 fBq |
| 100 MBq | 1 × 1023 fBq |