IV Infusion Rate Calculator

Summary

Enter dose, patient weight, and drug concentration to get the infusion rate in mL/hr, or enter a rate to back-calculate the delivered dose.

How it works

1. Select the calculation direction: dose to rate, or rate to dose.
2. Enter the patient weight in kilograms or pounds (the tool converts automatically).
3. Enter the prescribed dose and choose the dose unit (mg/kg/hr, mcg/kg/min, or mcg/kg/hr).
4. Enter the drug concentration as mg per mL or mcg per mL in the IV bag.
5. Click Calculate to see the infusion rate in mL/hr (or the back-calculated dose).
6. Use the Reset button to clear all fields before a new calculation.

Use cases

• Set an IV pump rate for weight-based vasopressor or sedation infusions.
• Verify that a running pump rate matches the prescribed mcg/kg/min dose.
• Convert between mg/hr total dose and mL/hr when the concentration is known.
• Cross-check infusion orders before bedside administration.
• Teach pharmacology and drug calculation skills to nursing or pharmacy students.
• Calculate rates for common ICU drips such as norepinephrine, propofol, or heparin.

Frequently Asked Questions