mL/hr to mcg/hr Calculator
Convert an infusion pump rate (mL/hr) into a dose delivery rate (mcg/hr) using the prepared concentration (mcg/mL).
Total prepared syringe/bag volume in mL.
Total micrograms in the full volume.
Pump rate in mL per hour.
If provided, shows mcg/kg/min.
How mL/hr to mcg/hr Conversion Works
This calculation is used when a syringe or bag contains a known total amount of drug in micrograms (mcg) and a known final volume in millilitres (mL). From those two values, you calculate the concentration in mcg/mL.
Once you know the concentration, the pump rate (mL/hr) can be converted into the delivered dose rate (mcg/hr) by simple multiplication. The calculator also shows mcg/min, and if you enter patient weight, mcg/kg/min (common for vasoactive infusions).
Formula
Worked Examples
Example 1: 4,000 mcg in 50 mL. Pump is running at 6 mL/hr. What is the dose in mcg/hr?
mcg/hr = 6 × 80 = 480 mcg/hr
Example 2: 2,000 mcg in 40 mL. Rate is 3 mL/hr. What is mcg/hr and mcg/min?
mcg/hr = 3 × 50 = 150 mcg/hr
mcg/min = 150 ÷ 60 = 2.5 mcg/min
Example 3: Same as example 2, but patient weight is 80 kg. What is mcg/kg/min?
Clinical safety note: Always confirm the final prepared volume, total drug amount, and local concentration standards. High-risk infusions typically require an independent double-check per policy. This calculator supports checking only.
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 principles and high-risk infusion safety guidance.
Clinical disclaimer: Educational checking tool only — always follow local policy and product guidance.