Benzodiazepine Equivalence Calculator

Convert between benzodiazepine doses for switching or tapering.

For educational and clinical reference. Not a substitute for medical judgment. See the medical disclaimer.
Equivalent dose
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References

  1. Ashton CH. Benzodiazepines: How They Work and How to Withdraw (The Ashton Manual). 2002.

How to use

  1. Select source benzodiazepine + dose and target benzodiazepine.
  2. Equivalent dose appears instantly.
  3. Confirm with a current pharmacology reference before clinical use.

Frequently asked questions

Reference dose?

10 mg diazepam is the baseline. Equivalents: alprazolam 1 mg ≈ lorazepam 2 mg ≈ clonazepam 1 mg ≈ oxazepam 30 mg ≈ temazepam 20 mg ≈ midazolam 7.5 mg.

Why convert benzodiazepines?

Most commonly for tapering: convert short-acting benzos (alprazolam, lorazepam) to long-acting diazepam to smooth out withdrawal symptoms.

Are equivalents exact?

No — published ratios vary. The Ashton Manual is widely cited but other sources (UK CSM, UpToDate) provide slightly different ratios.

How fast to taper?

Typical withdrawal taper: reduce dose by 5–10% every 2–4 weeks (Ashton). Slower for long-term use.

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