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Radiology Converters

Radiation - Activity Converter

Result

... Curie = ... Rutherford

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Curie to Rutherford Converter

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

Conversion formula

1 Ci = 37,000 Rd

1 Rd = 0.000027027027027027 Ci

Example: 1000 Ci = 37,000,000 Rd

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

Rutherford

One rutherford is defined as one million disintegrations per second (1 MBq).

History: Named after Ernest Rutherford, the father of nuclear physics. Proposed in 1946.

Current use: Obsolete, replaced by the megabecquerel (MBq).

Also written as Rd, rutherfords.

Curie to Rutherford table

Curie [Ci]Rutherford [Rd]
0.01 Ci370 Rd
0.1 Ci3,700 Rd
1 Ci37,000 Rd
2 Ci74,000 Rd
5 Ci185,000 Rd
10 Ci370,000 Rd
20 Ci740,000 Rd
50 Ci1,850,000 Rd
100 Ci3,700,000 Rd

Frequently asked questions

  • How many Rutherford (Rd) are in one Curie (Ci)?

    One Curie equals 37,000 Rutherford.

  • How do you convert Curie to Rutherford?

    Multiply the Curie value by 37,000 to get the result in Rutherford.

  • How do you convert Rutherford back to Curie?

    Multiply the Rutherford value by 0.000027027027027027 to get back to Curie.

  • What is 1000 Curie in Rutherford?

    1000 Curie equals 37,000,000 Rutherford.