Convert Kilobecquerels per kilogram to Femtobecquerels per kilogram
Convert Kilobecquerels per kilogram (kBq/kg) to Femtobecquerels per kilogram (fBq/kg) instantly and accurately.
Conversion Formula
fBq/kg = kBq/kg × 1.000000000e+18
About Kilobecquerels per kilogram
The kilobecquerel per kilogram (kBq/kg) equals 10³ Bq/kg = 1 Bq/g. Standard unit for moderately contaminated environmental samples: post-Fukushima Japanese food monitoring reports kBq/kg for agricultural products; WHO and IAEA guidelines for radioactively contaminated soil use kBq/kg thresholds for agricultural intervention. 1 kBq/kg = 10³ Bq/kg = 1 Bq/g.
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
| Kilobecquerels per kilogram (kBq/kg) | Femtobecquerels per kilogram (fBq/kg) |
|---|---|
| 1 kBq/kg | 1 × 1018 fBq/kg |
| 2 kBq/kg | 2 × 1018 fBq/kg |
| 5 kBq/kg | 5 × 1018 fBq/kg |
| 10 kBq/kg | 1 × 1019 fBq/kg |
| 25 kBq/kg | 2.5 × 1019 fBq/kg |
| 50 kBq/kg | 5 × 1019 fBq/kg |
| 100 kBq/kg | 1 × 1020 fBq/kg |