Enter the total volume (mL), the time (mins), and the drops per mL into the Drip Rate Calculator. The calculator will evaluate the Drip Rate. 

Drip Rate Formula

The following formula is used to calculate the Drip Rate. 

DRP = V/T * D
  • Where DRP is the Drip Rate (drops/min)
  • V is the total volume (mL) 
  • T is the time (mins) 
  • D is the drops per mL 

To calculate the drip rate, divide the total volume by the time, then multiply by the drops per mL.

How to Calculate Drip Rate?

The following two example problems outline the steps and information needed to calculate the Drip Rate.

Example Problem #1

  1. First, determine the total volume (mL).
    • The total volume (mL) is calculated to be : 500.
  2. Next, determine the time (mins).
    • The time (mins) is measured to be: 30.
  3. Next, determine the drops per mL.
    • The drops per mL is found to be: 6.
  4. Finally, calculate the Drip Rate using the formula above: 

DRP = V/T * D

The values provided above are inserted into the equation below and computed.

DRP = 500/30* 6 = 100 (drops/min)

Example Problem #2

The variables required for this problem are provided below:

total volume (mL) = 300

time (mins) = 10

drops per mL = 5

Test your knowledge using the equation and check your answer with the calculator.

DRP = V/T * D = (drops/min)