Interactive tool

IV Drip Rate Calculator

Enter the volume, the time to infuse, and your tubing's drop factor to get the manual drip rate in drops per minute (gtt/min) — and the mL/hr rate for a pump. Handy when there's no pump available, or to sanity-check one that is.

Volume (mL) Time

Drop factor (gtt/mL)

Manual drip rate

— gtt/min

Count drops over 15 sec × 4 to verify.

Pump rate

— mL/hr

For a volumetric infusion pump.