Home › Clinical Tools › Activity units

🔄 Activity Unit Converter

UseWhen reports, orders and console units disagree.

Loading calculator…

SourceSI / conventional NM activity units (1 mCi = 37 MBq)

Runs locally in your browser (no PHI uploaded). For licensed clinicians — not a substitute for clinical judgement.
Stored on this device for revisit reminders

This-shift next steps

After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.

Score + version; reference only — not a substitute for care · no HIS write

Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.

Methodology · worked example, guidelines & full notes
Clinical takeaway

Unit conversion only — no decay correction.

When to use

When reports, orders and console units disagree.

How it works

1 mCi = 37 MBq = 0.037 GBq = 1000 µCi.

Key points

  • Unit conversion only — no decay correction.

References

  • SI / conventional NM activity units (1 mCi = 37 MBq)

Worked calculation

The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.

Value1
From unitMBq

→mCi0.027027mCi

  • MBq:1
  • GBq:0.001
  • µCi:27.027027
Value1
From unitmCi

→mCi1mCi

  • MBq:37
  • GBq:0.037
  • µCi:1000
Verification & sources · governance
FAQ

Frequently asked questions

What are the limits and cautions when using Activity Unit Converter?
For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
Does Activity Unit Converter upload patient data? Where is it calculated?
Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
How is Activity Unit Converter calculated in practice? Can you show a worked example?
Inputs: Value 1, From unit MBq → Result: mCi 0.027027 mCi(MBq: 1, GBq: 0.001, µCi: 27.027027) Inputs: Value 1, From unit mCi → Result: mCi 1 mCi(MBq: 37, GBq: 0.037, µCi: 1000)
Related tools