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Radiation-Activity Converter

Enter a value below to convert between metric, imperial, and standard radiation-activity units.

Convert Radiation-Activity

Enter a value and select the units to convert between becquerels, kilobecquerels, and megabecquerels.

Instant conversion
Result
0.01 kBq
10 Bq = 0.01 kBq
10 Bq = 0.01 kBq = 0.00001 MBqGet Widget

You can change the units using the dropdowns above or click on a unit button.

Suggested Conversions

Common Radiation-Activity Reference Points

Here are some common radiation-activity values in Becquerel (Bq), Kilobecquerel (kBq), and Megabecquerel (MBq). Click any preset value or arrow to load it into the converter.

DescriptionBecquerel (Bq)Kilobecquerel (kBq)Megabecquerel (MBq)
1 becquerel unit10.0010.000001
5 becquerels50.0050.000005
10 becquerels benchmark100.010.00001
25 becquerels250.0250.000025
50 becquerels500.050.00005
100 becquerels reference1000.10.0001

Radiation-Activity Conversion Formulas

Use the following formulas to convert between becquerels, kilobecquerels, and megabecquerels.

Becquerels to Kilobecquerels
kBq = Bq × 0.001
Kilobecquerels to Becquerels
Bq = kBq × 1,000
Becquerels to Megabecquerels
MBq = Bq × 0.000001
Example: Convert 10 Becquerels (Bq) to Kilobecquerels (kBq)
1 Bq = 0.001 kBq
10 Bq × 0.001 = 0.01 kBq

All radiation-activity conversions are anchored to the international SI base unit (Becquerel) for full scientific and engineering accuracy.

More Becquerel & Kilobecquerel Conversions

Convert from Becquerels

Convert to Kilobecquerels

Frequently Asked Questions

1 becquerel (Bq) equals 0.001 kilobecquerels (kBq). Multiply your becquerel value by 0.001 or enter it in the Radiation-Activity Converter above for instant calculation.

All Radiation-Activity Conversion Calculators (6)

Select any dedicated radiation-activity pair below for worked examples and printable tables

Becquerels to Kilobecquerels (Bq to kBq)Kilobecquerels to Becquerels (kBq to Bq)Becquerels to Megabecquerels (Bq to MBq)Megabecquerels to Becquerels (MBq to Bq)Becquerels to Gigabecquerels (Bq to GBq)Gigabecquerels to Becquerels (GBq to Bq)

Category Conversion Matrix

Simultaneous comparison of 8 units in this category

Becquerel (Bq)
1
Kilobecquerel (kBq)
0.001
Megabecquerel (MBq)
0.000001
Gigabecquerel (GBq)
1.000000e-9
Curie (Ci)
2.702703e-11
Millicurie (mCi)
2.702703e-8
Microcurie (µCi)
0.00002702
Rutherford (Rd)
0.000001

Radiation-Activity Unit Definitions & Symbols

Becquerel (Bq)

SI

SI derived unit of radioactivity equal to 1 nuclear decay per second.

Kilobecquerel (kBq)

METRIC

Equal to 1,000 Becquerels.

Megabecquerel (MBq)

METRIC

Nuclear medicine tracer activity unit (10⁶ Bq).

Gigabecquerel (GBq)

METRIC

Equal to 10⁹ Becquerels (≈ 27.027 mCi).

Curie (Ci)

OTHER

Traditional radioactivity unit equal to 3.7×10¹⁰ Becquerels (37 GBq).

Millicurie (mCi)

OTHER

Equal to 37 Megabecquerels (3.7×10⁷ Bq).

Microcurie (µCi)

OTHER

Equal to 37 Kilobecquerels (37,000 Bq).

Rutherford (Rd)

OTHER

Equal to 1 Megabecquerel (10⁶ decays/s).

References

NIST · BIPM · ISO
  1. [1]
    NIST (NIST HB 133 / SP 811)·Checking the Net Contents of Packaged Goods, Handbook 133 - 2019 Edition & NIST SP 811
    NIST HB 133 Standard
  2. [2]
    BIPM (BIPM SI-9)·The International System of Units (SI Brochure, 9th Edition)
    BIPM SI Brochure
  3. [3]
    NIST SP 811 (NIST SP 811 App. B.9)·NIST Guide to the SI, Appendix B.9: Factors for Units Listed by Kind of Quantity or Field of Science
    NIST SP 811 Appendix B.9
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