☢️ Radioactivity Unit Converter
Becquerel (Bq)1
Kilobecquerel (kBq)0.001
Megabecquerel (MBq)0.000001
Gigabecquerel (GBq)0
Curie (Ci)0
Millicurie (mCi)0
Microcurie (µCi)0.000027
Convert between becquerel (Bq), curie (Ci), and related units of radioactivity (decays per second) in real time. One curie is defined as exactly 3.7×10^10 becquerels.
How to use
- Enter a value in the unit you want to convert from.
- The converted values in the other units update in real time.
FAQ
What’s the relationship between becquerel and curie?
One curie (Ci) is defined as exactly 3.7×10^10 becquerels (Bq) — a historical value based on the decay rate of 1 gram of radium-226.
Which unit is the modern one?
The becquerel (Bq) is the official SI unit, representing one decay per second. The curie (Ci) is an older, traditional unit still used in some fields.
Can this calculate radiation dose (sieverts)?
No. Radioactivity (decay rate) and radiation dose (absorbed/equivalent dose) are different physical quantities that can’t be converted with a simple factor, so this tool doesn’t cover dose.