Nursing · Critical Care · Emergency Medicine

Gravity Drip Rate (gtt/min) calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Volume to infuse (mL)

Infusion duration (min)

Drop factor (gtt/mL)

Result

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Formula inputs

Volume to infuse (mL)Accepted range: 1 to 10000
Infusion duration (min)Accepted range: 1 to 10080
Drop factor (gtt/mL)Accepted range: 10 to 60

Primary source

Weinstein SM. Plumer's Principles and Practice of Intravenous Therapy. DOI: 10.1016/B978-0-323-02948-2.50010-5. PMID: 16216745. Scope: gravity drip rate (drops/min) = (volume to infuse [mL] × drop factor [gtt/mL]) / infusion time (minutes). (2007)

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