Manual Drop Rate
Drops per minute practice
Formula
(volume × drop factor) ÷ time in minutes
Worked example
A fictional 500 mL with 20 gtt/mL over 240 minutes gives 41.67 gtt/min, rounded to 42.
The entered giving-set drop factor is assumed to be correct.
Open the interactive calculator
Educational medication-calculation arithmetic practice only. Use fictional or tutor-provided values. Do not enter patient information or use the result for an individual patient.