Radioactivity Converter
Convert activity units that describe radioactive decay rate.
How to Use the Radioactivity Converter
Enter an activity value, select the source unit and choose the target unit to convert between becquerel, kilobecquerel, megabecquerel and curie.
Practical Example
1 MBq equals 1,000,000 Bq. One curie equals 37 billion becquerels.
Factors That Affect Radioactivity
Actual activity changes over time according to isotope half-life and decay processes. The converter changes units only and does not model radioactive decay.
Frequently Asked Questions
What is a becquerel?
One becquerel means one nuclear decay per second.
How many becquerels are in one curie?
One curie equals 37,000,000,000 Bq.
Does this calculate half-life?
No. It converts known radioactivity values between units.
Understanding Radioactivity Units
Radioactivity measures the rate of nuclear decays and is expressed in becquerels in SI, where one becquerel equals one decay per second. Curies and metric multiples of the becquerel are also used in some contexts.
A unit conversion does not indicate absorbed dose or biological effect. Activity, exposure and dose are different quantities, so use the correct measurement type when interpreting radiation data.
Unit Relationship and Practical Context
Radioactivity measures nuclear decays per second: 1 becquerel = 1 decay/s, while 1 curie = 3.7×10^10 Bq. Activity is not the same as absorbed dose or biological risk, which require additional radiation and exposure information.