💉 IV Drip Rate
Drops per minute and mL/hr for IV infusions
About this calculator
The IV Drip Rate calculator converts a prescribed infusion into drops per minute for gravity-fed IVs. Enter the total volume in milliliters, the infusion time in minutes, and the tubing drop factor (commonly 10, 15, 20, or 60 gtt/mL). The formula is volume times drop factor divided by minutes, giving the gtt/min rate to set on the roller clamp. For educational purposes only — always verify with your facility's clinical protocols.
Tip: always recount for a full minute after setting the clamp; a one-drop error compounds into a meaningful volume difference over a long infusion.