mL/hr to mg/min Calculator
Convert an infusion pump rate (mL/hr) to a dose per minute (mg/min) using the medication concentration (mg/mL).
Pump rate in mL per hour (commas accepted).
How many mg are in each 1 mL.
How mL/hr to mg/min Conversion Works
Infusion pumps are commonly set in mL per hour (mL/hr), but the medication delivery you care about is the amount of drug being administered.
If you know the concentration of the infusion in mg per mL (mg/mL), you can calculate the dose rate: first in mg/hr, then convert to mg/min by dividing by 60.
This is useful for minute-by-minute interpretation (and for checking calculations against protocols, charts, or documentation).
Formula
Worked Examples
Example 1: Rate 12 mL/hr, concentration 2 mg/mL. What is mg/min?
mg/min = 24 ÷ 60 = 0.4 mg/min
Example 2: Rate 30 mL/hr, concentration 0.5 mg/mL. What is mg/min?
mg/min = 15 ÷ 60 = 0.25 mg/min
Example 3: Rate 7.5 mL/hr, concentration 4 mg/mL. What is mg/min?
mg/min = 30 ÷ 60 = 0.5 mg/min
Clinical safety note: Confirm your concentration is mg/mL (not total mg in a bag), confirm pump units are mL/hr, and avoid rounding early. High-risk infusions may require an independent double-check.
Related Calculators
Frequently Asked Questions
Clinical reminder: Always follow local protocols and consult medication information sheets. These examples are for calculation practice only.
References & Sources
References focus on medication calculation structure and medication safety principles.
Clinical disclaimer: Educational checking tool only — always follow local policy and product guidance.