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Radiology Converters

Radiation - Activity Converter

Result

... Curie = ... Microcurie

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Curie to Microcurie Converter

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

Conversion formula

1 Ci = 1,000,000 µCi

1 µCi = 0.000001 Ci

Example: 1000 Ci = 1,000,000,000 µCi

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Becquerel to CurieBecquerel to MillicurieBecquerel to MicrocurieBecquerel to RutherfordCurie to BecquerelCurie to MillicurieCurie 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.

Microcurie

One microcurie is equal to one millionth of a curie (1.0E-6 curies), or 37,000 becquerels.

History: Standard metric prefix applied to the curie.

Current use: Used for measuring small amounts of radioactive tracers and lab samples.

Also written as µCi, uCi, microcuries.

Curie to Microcurie table

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

Frequently asked questions

  • How many Microcurie (µCi) are in one Curie (Ci)?

    One Curie equals 1,000,000 Microcurie.

  • How do you convert Curie to Microcurie?

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

  • How do you convert Microcurie back to Curie?

    Multiply the Microcurie value by 0.000001 to get back to Curie.

  • What is 1000 Curie in Microcurie?

    1000 Curie equals 1,000,000,000 Microcurie.