Local Anesthetic Dosing Calculator

“When every mL counts.”

Weight (kg): Route:

Age:

Local Anesthetic: Concentration (%):

Add Adjuvants

Dexamethasone (0.05–0.1 mg/kg):

⚠ Use preservative-free only. Not for spinal use.

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α2-Agonist (Clonidine/Dexmedetomidine, 1 mcg/kg): Need help drawing this up?

💡 May extend motor block by ~40 min and analgesia by 1–2 hr.
Higher doses (e.g. 2 mcg/kg) can increase sedation and lower blood pressure.

Morphine (2–20 mcg/kg):

⚠ Not recommended for peripheral blocks.

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Epinephrine (optional adjuvant): Use epinephrine “wash”

⚠ Adds ~20 minutes motor blockade and helps detect intravascular injection.

Disclaimer: This calculator is a beta-stage educational tool designed to assist with local anesthetic dosing decisions. It is not a substitute for clinical judgment or institutional policy. Dose ranges are drawn from peer-reviewed references including ASRA/ESRA guidelines and related editorials, with a conservative safety approach. All results should be confirmed against patient-specific factors, drug labels, and local protocols. Use at your own discretion.