Enter the volume in milliliters and the time in hours into the calculator to determine the rate in milliliters per hour. This calculator helps in determining the flow rate for medical dosing or chemical processes.

ML Per Hour Formula

The following formula is used to calculate the rate in milliliters per hour.

Rate (mL/hr) = Volume (mL) / Time (hr)

Variables:

  • Volume is the total volume of fluid in milliliters (mL)
  • Time is the duration over which the volume is administered in hours (hr)
  • Rate is the flow rate in milliliters per hour (mL/hr)

To calculate the rate in milliliters per hour, divide the total volume of fluid by the time in hours.

What is ML Per Hour?

Milliliters per hour (mL/hr) is a measure of flow rate commonly used in medical dosing and various chemical processes. It indicates the volume of fluid that passes through a given point or is administered over the course of an hour. This measurement is crucial for ensuring accurate and safe delivery of medications, nutrients, or chemicals.

How to Calculate ML Per Hour?

The following steps outline how to calculate the rate in milliliters per hour.


  1. First, determine the total volume of fluid (Volume) in milliliters (mL).
  2. Next, determine the duration over which the volume is administered (Time) in hours (hr).
  3. Use the formula from above: Rate (mL/hr) = Volume (mL) / Time (hr).
  4. Finally, calculate the rate in milliliters per hour (mL/hr).
  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.

total volume of fluid (Volume) = 500 milliliters

duration over which the volume is administered (Time) = 5 hours