Unit converter

Radioactive Activity converter

Convert becquerels, curies, rutherfords, and activity multiples.

Enter a value and choose units. Results update instantly.

1 Ci = 37,000,000,000 Bq

All Activity units

From 1 Ci
UnitValue
Becquerel Bq 37,000,000,000
Kilobecquerel kBq 37,000,000
Megabecquerel MBq 37,000
Gigabecquerel GBq 37
Microcurie μCi 1,000,000
Millicurie mCi 1,000
Curie Ci 1
Rutherford Rd 37,000
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Common tasks

Curie to BecquerelCi to Bq Becquerel to CurieBq to Ci Millicurie to MegabecquerelmCi to MBq Microcurie to KilobecquerelμCi to kBq Gigabecquerel to MillicurieGBq to mCi Rutherford to MegabecquerelRd to MBq

Reference

How radioactive activity conversion works

Activity measures nuclear decays per second. It does not by itself determine absorbed dose, which depends on radiation type, energy, geometry, and exposure.

Values are converted to becquerel first, then from that reference into the requested unit. Keeping a single documented reference reduces inconsistent pair-by-pair constants.

Accuracy note: The curie is exactly 3.7 x 10^10 becquerels by definition.

Unit reference

UnitSymbol1 unit in Bq
BecquerelBq1
KilobecquerelkBq1,000
MegabecquerelMBq1,000,000
GigabecquerelGBq1,000,000,000
MicrocurieμCi37,000
MillicuriemCi37,000,000
CurieCi37,000,000,000
RutherfordRd1,000,000

Long-tail directory

Every indexed conversion

Choose a source unit to see all available destinations.

From Becquerel (Bq)
Becquerel to KilobecquerelBecquerel to MegabecquerelBecquerel to GigabecquerelBecquerel to MicrocurieBecquerel to MillicurieBecquerel to CurieBecquerel to Rutherford
From Kilobecquerel (kBq)
Kilobecquerel to BecquerelKilobecquerel to MegabecquerelKilobecquerel to GigabecquerelKilobecquerel to MicrocurieKilobecquerel to MillicurieKilobecquerel to CurieKilobecquerel to Rutherford
From Megabecquerel (MBq)
Megabecquerel to BecquerelMegabecquerel to KilobecquerelMegabecquerel to GigabecquerelMegabecquerel to MicrocurieMegabecquerel to MillicurieMegabecquerel to CurieMegabecquerel to Rutherford
From Gigabecquerel (GBq)
Gigabecquerel to BecquerelGigabecquerel to KilobecquerelGigabecquerel to MegabecquerelGigabecquerel to MicrocurieGigabecquerel to MillicurieGigabecquerel to CurieGigabecquerel to Rutherford
From Microcurie (μCi)
Microcurie to BecquerelMicrocurie to KilobecquerelMicrocurie to MegabecquerelMicrocurie to GigabecquerelMicrocurie to MillicurieMicrocurie to CurieMicrocurie to Rutherford
From Millicurie (mCi)
Millicurie to BecquerelMillicurie to KilobecquerelMillicurie to MegabecquerelMillicurie to GigabecquerelMillicurie to MicrocurieMillicurie to CurieMillicurie to Rutherford
From Curie (Ci)
Curie to BecquerelCurie to KilobecquerelCurie to MegabecquerelCurie to GigabecquerelCurie to MicrocurieCurie to MillicurieCurie to Rutherford
From Rutherford (Rd)
Rutherford to BecquerelRutherford to KilobecquerelRutherford to MegabecquerelRutherford to GigabecquerelRutherford to MicrocurieRutherford to MillicurieRutherford to Curie

Primary source

Definitions and standards

Conversion constants and definitions for this category are checked against BIPM SI Brochure: becquerel.

See Methods & sources for rounding rules, exact-value handling, and review policy.

Questions

Radioactive Activity FAQ

What is the reference unit for radioactive activity conversions?

ConvertWin uses becquerel (Bq) as the internal reference for this category, then converts to the selected output unit.

How accurate is this radioactive activity converter?

The curie is exactly 3.7 x 10^10 becquerels by definition.