Radiation Activity Converter

⚡ Convert becquerel to curie, curie to Bq free and instant. For nuclear physics and medical imaging. No sign-up required. ☢️

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Enter a value to see the result
Common Conversions
Quick access to frequently used conversions
Unit Information

SI Units

International System of Units (SI) measurements

Bq
si
Becquerel
SI unit of radiation activity
kBq
si
Kilobecquerel
Kilobecquerel (1000 Bq)
MBq
si
Megabecquerel
Megabecquerel (1,000,000 Bq)
GBq
si
Gigabecquerel
Gigabecquerel (1,000,000,000 Bq)

traditional

Unit measurements

Ci
traditional
Curie
Traditional unit of radiation activity
mCi
traditional
Millicurie
Millicurie (1/1000 Ci)
μCi
traditional
Microcurie
Microcurie (1/1,000,000 Ci)
nCi
traditional
Nanocurie
Nanocurie (1/1,000,000,000 Ci)

Other Units

Specialized and historical measurements

Rd
other
Rutherford
Rutherford (1,000,000 Bq)
mRd
other
Millirutherford
Millirutherford (1/1000 Rd)
μRd
other
Microrutherford
Microrutherford (1/1,000,000 Rd)

Practical Units

Commonly used units in practical applications

dps
practical
Disintegrations per Second
Disintegrations per second (same as Bq)
dpm
practical
Disintegrations per Minute
Disintegrations per minute
cps
practical
Counts per Second
Counts per second (same as Bq)
cpm
practical
Counts per Minute
Counts per minute
Preferences

Radiation Activity Converter

Free radiation activity converter: convert becquerel (Bq) to curie (Ci), curie to becquerel, and more. This tool converts between Bq, kBq, MBq, Ci, mCi, μCi, and other radiation activity units for nuclear physics and medical imaging. Results update instantly. No sign-up required.

Supported Unit Categories:

  • SI Units: Bq, kBq, MBq, GBq
  • Traditional Units: Ci, mCi, μCi, nCi
  • Other Units: Rd, mRd, μRd
  • Practical Units: dps, dpm, cps, cpm

Common Conversions:

  • 1 Ci = 3.7 × 10¹⁰ Bq
  • 1 Bq = 2.7 × 10⁻¹¹ Ci
  • 1 mCi = 37 MBq
  • 1 μCi = 37 kBq

How to Use:

  1. Enter the value you want to convert in the input field
  2. Select the source unit from the "From" dropdown
  3. Select the target unit from the "To" dropdown
  4. View the converted result instantly
  5. Use the swap button to quickly reverse the conversion

Applications:

This radiation activity converter is useful for nuclear physicists, medical physicists, healthcare workers, researchers, students, and anyone working with nuclear physics, medical imaging, and radiation protection. It's particularly helpful for nuclear medicine, radiation therapy, environmental monitoring, and understanding radioactive decay.

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Added Dec 16, 2025

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