Pharmacist

IV Drip Rate (Drops/min)

Calculates the manual gravity IV infusion rate in drops per minute.

Parameters

mL
Time

IV Drip Rate (Drops/min) Result

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FormulaDrip Rate (gtts/min) = (Volume in mL × Drop Factor in gtts/mL) / Time in minutes

Clinical Pearls

Fundamental for setting gravity infusions in resource-limited settings, field medicine, or during transport when infusion pumps are not available.

Limitations

Gravity flow is affected by patient arm position, venous pressure, bag height, and catheter patency; regular rate checks are required.