Manually Controlled and Regulated IVs

Watch Count and Drip Rate - IV Tubing Calculator

Are you able to help others? Share this page.


This calculator determines the drip rate for a manually regulated IV. Flow rate is the rate a liquid volume is delivered over a period of time. Manually regulated IVs are also known gravity tubing IVs.

  1. IV stands for intravenous.
  2. IV tubing comes in 10, 15 and 20 gtt/mL for macrodrop and 60 gtt/mL for microdrop factors.

Calculation Instructions:

  1. Enter the volume ordered and select the units.
  2. Enter the time ordered and select the units.
  3. Enter the IV tubing calibration and select the units.


Parameter Unit Units Used Description
Volume volume milliliter liter The amount of solution or fluid to be given over a time period.
Time time hour minute The duration or time the IV is to be administered.
Calibration drop factor gtt/milliliter The number of drops needed to deliver 1 milliliter of fluid.


Parameter Unit Units Used Description
Drip Rate or Watch Count drops per minute gtt/minute The number of drops per minute to be administered.


Software programs, calculations, solutions, answers and calculators are intended for education purposes only. Use at your own risk. With the use of any information on this site, the user shall assume/take sole responsibility for any consequences or damages. This calculator may or may not be accurate or reliable. By using this calculator you acknowledge any reliance on this calculator shall be at your sole risk.