Corticosteroid Conversion Calculator

Convert between corticosteroid doses (anti-inflammatory equivalents).

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

  1. Liu D, Ahmet A, Ward L, et al. A practical guide to the monitoring and management of the complications of systemic corticosteroid therapy. Allergy Asthma Clin Immunol. 2013;9(1):30.

How to use

  1. Select source corticosteroid + dose and target corticosteroid.
  2. Equivalent dose appears instantly.
  3. Account for mineralocorticoid activity when relevant.

Frequently asked questions

Equivalence basis?

Anti-inflammatory equivalence: cortisone 25 = hydrocortisone 20 = prednisone 5 = prednisolone 5 = methylprednisolone 4 = triamcinolone 4 = dexamethasone 0.75 = betamethasone 0.6 (mg).

Does this account for mineralocorticoid effects?

No. Hydrocortisone and cortisone have significant mineralocorticoid activity; dexamethasone has almost none. Choice depends on whether mineralocorticoid effects are desired.

Half-life differences?

Hydrocortisone (short, 8–12h), prednisone/methylprednisolone (intermediate, 18–36h), dexamethasone/betamethasone (long, 36–54h). Dosing frequency depends on this.

When to use this calculator?

For switching steroids in transplant patients, asthma, COPD, IBD, autoimmune disease, or adrenal insufficiency.

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