The IV infusion duration calculator tells you how many hours and minutes an IV bag will take to finish at a given pump rate. Nurses use this to plan medication rounds, anticipate when a bag needs changing, and document expected completion times accurately. Enter an optional start time to get the precise clock time when the infusion will finish — useful for handover documentation and drip round planning.
Divide the remaining volume in mL by the current flow rate in mL/hr. For example, 750 mL remaining at 125 mL/hr = 750 ÷ 125 = 6 hours until the bag runs dry.
Infusion pumps can vary slightly due to line resistance, occlusions, and patient movement. Always physically check the bag rather than relying solely on calculated times. Some pumps display a 'time to complete' reading directly.