Intravenous (IV) fluid must be given to a patient at a specific rate. The IV fluids given neither be too fast nor too slow. The Intravenous (IV) Fluid specific flow rate may be measured as ml/hour, L/hour or drops/min. To control or adjust the flow rate only drops per minute are used. Use this online intravenous fluid flow rate calculator to estimate the specific flow rate of the Intravenous (IV) fluid to patients.