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Radiology Converters

Radiation - Activity Converter

Result

... Curie = ... Millicurie

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Curie to Millicurie Converter

Use this page to convert curie values into millicurie, with background details, formulas, a worked example, and a quick conversion table.

Conversion formula

1 Ci = 1,000 mCi

1 mCi = 0.001 Ci

Example: 1000 Ci = 1,000,000 mCi

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Becquerel to CurieBecquerel to MillicurieBecquerel to MicrocurieBecquerel to RutherfordCurie to BecquerelCurie to MicrocurieCurie to RutherfordCurie to Disintegrations per secondMillicurie to BecquerelMillicurie to Curie

Curie

One curie is approximately the activity of 1 gram of the radium isotope 226Ra, equal to 3.7E+10 becquerels.

History: Named after Pierre and Marie Curie. Originally defined in 1910.

Current use: Still commonly used in the United States and in some clinical settings alongside the becquerel.

Also written as Ci, curies.

Millicurie

One millicurie is equal to 0.001 curies or 3.7E+7 becquerels.

History: Standard metric prefix applied to the curie.

Current use: Common in nuclear medicine for diagnostic and therapeutic doses.

Also written as mCi, millicuries.

Curie to Millicurie table

Curie [Ci]Millicurie [mCi]
0.01 Ci10 mCi
0.1 Ci100 mCi
1 Ci1,000 mCi
2 Ci2,000 mCi
5 Ci5,000 mCi
10 Ci10,000 mCi
20 Ci20,000 mCi
50 Ci50,000 mCi
100 Ci100,000 mCi

Frequently asked questions

  • How many Millicurie (mCi) are in one Curie (Ci)?

    One Curie equals 1,000 Millicurie.

  • How do you convert Curie to Millicurie?

    Multiply the Curie value by 1,000 to get the result in Millicurie.

  • How do you convert Millicurie back to Curie?

    Multiply the Millicurie value by 0.001 to get back to Curie.

  • What is 1000 Curie in Millicurie?

    1000 Curie equals 1,000,000 Millicurie.