Choose flow rate, volume, duration or IV drip arithmetic. Convert compatible volume/time units and optionally include fluid density or a finish-clock comparison. IV whole-drop and 15-second values are arithmetic comparisons, not prescribed settings.

Find constant volume flow from a volume and duration.

Arithmetic only. For an infusion, verify the order, exact tubing factor and device settings independently. Whole-drop comparisons do not establish a suitable clinical setting.

Optional settings

Blank omits clock output. Adds elapsed time using 24-hour days, without a date, time zone or daylight-saving adjustment.

Blank omits mass output. Use the density of the actual fluid.

ml Per Minute Formula

The following formula is used to calculate the flow rate in ml per minute.

FR = V / T

Variables:

  • FR is the flow rate (ml per minute)
  • V is the volume (milliliters)
  • T is the time (minutes)

To calculate the flow rate in ml per minute, divide the volume by the time.

What is Flow Rate?

Flow rate is a measure of the volume of fluid that passes through a given surface or conduit per unit of time. It is commonly used in various fields such as medicine, chemistry, and engineering to determine the speed at which fluids are being transferred or processed. The flow rate can be measured in various units depending on the context, with milliliters per minute (ml/min) being a common unit in medical and laboratory settings.

How to Calculate Flow Rate?

The following steps outline how to calculate the flow rate in ml per minute.

  1. First, determine the volume (V) in milliliters.
  2. Next, determine the time (T) in minutes.
  3. Use the formula from above: FR = V / T.
  4. Finally, calculate the flow rate (FR) in ml per minute.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Volume (V) = 500 milliliters

Time (T) = 10 minutes. Flow rate = 500 mL ÷ 10 min = 50 mL/min.