Lidocaine Dosage Calculator

Calculate lidocaine dosing for local anesthesia and cardiac use.

Patient & Infusion

Weight Unit

Patient Weight

Concentration

Epi

LAST Risk: Exceeding 315 mg or 31.5 mL can trigger systemic toxicity.

Safety Assessment

Max Ml31.5mLDose Limit

Max Mg315mgTotal Dose

Limit: 31.5 mL. Always use the minimum volume required for clinical effect. Epinephrine extends duration and raises the toxicity threshold.

Disclaimer: This tool is for informational purposes only and is not a substitute for professional medical advice.

About this calculator

Overview

Lidocaine max 4.5 mg/kg local. Cardiac 1–1.5 mg/kg.

Fun Facts

Formula: Local max = 4.5 mg/kg. Cardiac: 1–1.5 mg/kg IV bolus.