IV Drip Rate Calculator

An IV drip rate is the speed at which intravenous fluid is administered to a patient, measured in drops per minute (gtt/min) or milliliters per hour (mL/hr). It determines how quickly medication or fluids enter the bloodstream.

The drop factor is the number of drops needed to deliver 1 mL of fluid, determined by the IV tubing set. Common drop factors are 10 gtt/mL (macro drip), 15 gtt/mL (macro drip), 20 gtt/mL (macro drip), and 60 gtt/mL (micro drip).

Micro drip tubing (60 gtt/mL) is used for pediatric patients, critical care medications, and any situation requiring precise, slow infusion rates typically under 100 mL/hr.

Multiply the mL/hr rate by the drop factor, then divide by 60. For example, 125 mL/hr with a 20 gtt/mL set: (125 × 20) ÷ 60 = 41.7, rounded to 42 gtt/min.

IV drip rate calculations in clinical settings must account for patient-specific factors, medication compatibility, and institutional protocols. Always verify calculations with a licensed healthcare professional before administering IV fluids.