Convert Megabecquerels per kilogram to Femtobecquerels per kilogram
Convert Megabecquerels per kilogram (MBq/kg) to Femtobecquerels per kilogram (fBq/kg) instantly and accurately.
Conversion Formula
fBq/kg = MBq/kg × 1.000000000e+21
About Megabecquerels per kilogram
The megabecquerel per kilogram (MBq/kg) equals 10⁶ Bq/kg. Typical for enriched or irradiated materials: moderately irradiated nuclear fuel after cooling has fission-product specific activities in the MBq/kg to GBq/kg range for individual nuclides; ₉ₐSr in high-dose-rate brachytherapy sources is characterised in MBq/kg. 1 MBq/kg = 10⁶ Bq/kg.
About Femtobecquerels per kilogram
The femtobecquerel per kilogram (fBq/kg) equals 10⁻¹⁵ Bq/kg. Used in accelerator mass spectrometry (AMS) to quantify cosmogenic radionuclide concentrations (¹⁰Be, ³⁶Cl) in ice cores, sediments, and geological minerals where activities per unit mass are at the femto-level. Ultra-clean radiochemistry purity assessments for solar neutrino detectors also reach fBq/kg sensitivities. 1 fBq/kg = 10⁻¹⁵ Bq/kg.
Quick Reference Table
| Megabecquerels per kilogram (MBq/kg) | Femtobecquerels per kilogram (fBq/kg) |
|---|---|
| 1 MBq/kg | 1 × 1021 fBq/kg |
| 2 MBq/kg | 2 × 1021 fBq/kg |
| 5 MBq/kg | 5 × 1021 fBq/kg |
| 10 MBq/kg | 1 × 1022 fBq/kg |
| 25 MBq/kg | 2.5 × 1022 fBq/kg |
| 50 MBq/kg | 5 × 1022 fBq/kg |
| 100 MBq/kg | 1 × 1023 fBq/kg |