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Lesson overview

mcg/kg/min Infusion Calculations: Dose Rate to mL/hr

Turn a verified weight-based medication dose rate in mcg/kg/min (micrograms/kg/min) into mL/hr, and reverse-check the dose rate represented by current verified infusion inputs.
About 32 minutesIV CalculationsNo account required

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Start with short teaching slides, then answer the lesson questions. Your progress stays on this browser.

Practise this lesson

Created by George Lambroglou, RN

Founder-led review of formulas, worked examples and safety text · Last reviewed 18 September 2026

MethodologyEditorial policy

Learning outcomes

What you will learn

  • Recognise mcg as microgram and read mcg/kg/min (micrograms/kg/min) in plain English.
  • Use the authorised dosing weight for the medicine/order; do not choose actual, ideal or adjusted weight by convenience.
  • Change a per-minute medication rate into a per-hour medication rate.
  • Change micrograms to milligrams when the prepared concentration uses mg/mL.
  • Use concentration to change a medication rate into mL/hr.
  • Work backwards from mL/hr to the mcg/kg/min dose rate represented by the same current pump rate, concentration and authorised dosing weight.
  • Keep smart-pump dose-rate units separate from mL/hr and stop when required current values conflict or are missing.

Clinical connection

Why this matters

The ordered medication rate and the pump rate describe different things. Keeping each unit attached to its number helps you see which small conversion comes next and makes the result easier to check.

Quick concept

How to convert mcg/kg/min to mL/hr

Multiply the authorised dose rate by the verified dosing weight to find mcg/min, multiply by 60 to convert to mcg/hr, then divide by the exact infusion concentration in mcg/mL to obtain mL/hr.

Formula

mL/hr = (mcg/kg/min × kg × 60) ÷ concentration (mcg/mL)

Worked example

Educational example: 5 mcg/kg/min for 70 kg with a verified concentration of 1000 mcg/mL.

(5 × 70 × 60) ÷ 1000 = 21 mL/hr

Answer: 21 mL/hr

Use only the authorised dosing weight and the exact current concentration that belong to the same infusion state. The arithmetic does not select a medicine, dose, concentration or titration target.

Lesson plan

How the lesson works

  1. 1

    Learn

    Short teaching slides explain one idea at a time with plain-language examples.

  2. 2

    Practise

    Answer calculation or scenario questions and receive immediate feedback.

  3. 3

    Finish

    Complete the lesson check and save your learning progress on this browser.

Keep going

Learn, practise, apply and check this skill

Use the page that matches what you need next. Each resource has a different job, so the lesson can stay focused on teaching the skill.

Practise

mcg/kg/min practice questions

Practise forward and reverse weight-based infusion calculations across four levels.

Understand

mcg/kg/min infusion guide

Review dose rate, concentration, dosing weight, the ×60 step and reverse checks.

Check

mcg/kg/min Infusion Rate Calculator

Calculate the pump rate when the authorised dose, dosing weight and concentration are known.

Apply

Medication & IV Safety cases

Apply weight-based infusion maths inside clinical medication scenarios.

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