Radiation Activity converter
How many nuclei decay per second: becquerels, curies and the picocurie figures used in radon reports.
Converter
Quick pairs
tap to loadOne curie in every radiation activity unit
12 rows| Unit | Symbol | 1 Ci equals |
|---|---|---|
| Becquerel | Bq | 3.7e10 |
| Kilobecquerel | kBq | 37,000,000 |
| Megabecquerel | MBq | 37,000 |
| Gigabecquerel | GBq | 37 |
| Terabecquerel | TBq | 0.037 |
| Millicurie | mCi | 1,000 |
| Microcurie | µCi | 1,000,000 |
| Nanocurie | nCi | 1,000,000,000 |
| Picocurie | pCi | 1e12 |
| Rutherford | Rd | 37,000 |
| Disintegration per second | dps | 3.7e10 |
| Disintegration per minute | dpm | 2.22e12 |
How the curie to becquerel conversion works
Multiply by 3.7e10 to go from curie to becquerel:
Bq = Ci × 3.7e10
Going the other way, multiply by 2.702703e-11, which is the same as dividing by 3.7e10.
Questions
How many becquerel are in one curie?
One curie equals 3.7e10 becquerel.
Which units does this radiation activity converter cover?
13 units in total, all referenced to the becquerel. They include becquerel, kilobecquerel, megabecquerel, gigabecquerel, terabecquerel, curie and more. Pick any pair from the two dropdown lists.
How precise are the results?
Every conversion is computed in your browser at double precision from the factors listed on this page, which follow the SI definitions and the exact international agreements for imperial and US customary units. Use the Decimals control to round the display without changing the underlying value.
Does anything I type leave my device?
No. The converter is plain JavaScript running locally, with no server round-trip, and the page keeps working offline once loaded.