Enter the volume (mL) and the time (hr) into the Calculator. The calculator will evaluate the Infusion Speed. 

Infusion Speed Formula

IS = V / T

Variables:

  • IS is the Infusion Speed (ml/hr)
  • V is the volume (mL)
  • T is the time (hr)

To calculate Infusion Speed, divide the volume infusion by the total time.

How to Calculate Infusion Speed?

The following steps outline how to calculate the Infusion Speed.


  1. First, determine the volume (mL). 
  2. Next, determine the time (hr). 
  3. Next, gather the formula from above = IS = V / T.
  4. Finally, calculate the Infusion Speed.
  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 (mL) = 400

time (hr) = 50

FAQs about Infusion Speed Calculation

What is the significance of calculating infusion speed in medical treatments?

Calculating infusion speed is crucial in medical treatments to ensure that medications or fluids are delivered at the correct rate. This precision helps in maintaining the desired therapeutic effect and avoids potential complications from too rapid or too slow infusion rates.

Can infusion speed calculations be applied to all types of infusions?

Yes, infusion speed calculations can be applied to most types of infusions, including IV medications, nutritional solutions, and blood products. However, specific considerations may be necessary for certain medications or conditions based on their pharmacokinetics and patient-specific factors.

How does the viscosity of a fluid affect the infusion speed?

The viscosity of a fluid can significantly affect the infusion speed. Higher viscosity fluids require more pressure to achieve the same infusion rate as lower viscosity fluids. This factor must be considered when calculating and setting up infusions, especially for substances like blood or certain medication solutions.