Pediatric Infusion Calculator (mg/kg/hour)

Calculate IV infusion rate in mL/h from a dose in mg/kg/h, weight, and drug concentration.

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

  1. Institute for Safe Medication Practices (ISMP). Guidelines for Standard Order Sets and Safe Pediatric Infusion Practices.

How to use

  1. Enter desired dose (mg/kg/h), weight (kg), and drug concentration (mg/mL).
  2. Infusion rate (mL/h) updates instantly.
  3. Always perform independent verification before administering.

Frequently asked questions

How is the infusion rate calculated?

Rate (mL/h) = (dose mg/kg/h × weight kg) / drug concentration (mg/mL).

When is mg/kg/h dosing used?

For continuous infusions where the dose is naturally expressed per hour — for example, certain sedatives, antiarrhythmics, and continuous insulin protocols.

How do I derive the concentration?

Concentration (mg/mL) = total drug (mg) ÷ total volume (mL). Example: 250 mg in 50 mL → 5 mg/mL.

How do I double-check?

Independent two-person verification of all pediatric infusions is best practice. Use the result here as a sanity check against your pump programming.

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