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Critical Care / ICU

Heparin Infusion Rate Calculator

Convert a units/kg/hr order into a pump rate.

Patient weight

kg

Ordered dose

units/kg/hr

Heparin in bag

units

Bag volume

mL

FORMULA(units/kg/hr × weight) ÷ concentration (units/mL)

Standard bags are often 25,000 units in 250 mL (100 units/mL) — always confirm the actual bag label and protocol.

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Quick reference

What this calculator is for

Converts a weight-based units/kg/hr order into a pump rate in mL/hr using the bag concentration.

Commonly used for

Heparin drip checks
Anticoagulation protocols
High-alert med math practice

Keep in mind

Heparin is a high-alert medication dosed from institutional protocols with lab monitoring. Verify concentration, dose, and pump settings with an independent double check.

Education & reference only

Always verify calculations and clinical decisions with institutional protocols and qualified clinical judgment.

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