IV Drip Rate Calculator

Determine the number of drops per minute (gtt/min) for a gravity-fed IV infusion.

Infusion Parameters

Total Volume to Infuse

Time Period

Drop Factor (gtt/mL)

Custom Drop Factor

Disclaimer: This tool provides clinical estimates. Always verify drip rates manually and follow hospital protocols for medication administration.

Calculated Drip Rate

Enter the volume, time, and drop factor to determine the drip rate.

About this calculator

Overview

IV drip rate calculation is essential for gravity-fed infusions where a mechanical pump is not available. It measures the number of drops (gtt) that should fall into the drip chamber per minute to deliver the prescribed volume over time.

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Pro Tips

Count the drops for a full minute to ensure accuracy, or count for 15 seconds and multiply by 4.
Ensure the drip chamber is half-full to prevent air from entering the line.
Check the IV tubing label to find the correct 'Drop Factor' for your specific equipment.
If the patient is moving frequently, the catheter position might change the flow rate – check regularly.

Fun Facts

"Drop factors are determined by the size of the administration set: Macro-drip (10, 15, 20 gtt/mL) or Micro-drip (60 gtt/mL)."
"Micro-drip sets are commonly used for pediatric patients or critical medications requiring slow rates."
"A drip rate of 60 gtt/min with a 60 gtt/mL set equals exactly 60 mL/hr."
"Gravity infusions must be monitored frequently as the rate can change based on the height of the IV bag or patient movement."

Formula: Drip Rate (gtt/min) = [Total Volume (mL) × Drop Factor (gtt/mL)] / Time (min)