IV Infusion Rate Calculator
IV rates in mL/h and drops/min, including weight-based drips.
Enter your values to see the result.
For education and clinical decision support only. Results do not replace professional judgment, local protocols or the product information, so always verify doses and values before acting on them.
Continue your work
- Drug Dilution Calculator — Prepare the infusion concentration.
- Drug Dose Calculator — Calculate weight-based doses.
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Clear instructions
Find steps, examples and limitations below.
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How to use the IV Infusion Rate Calculator
IV rates in mL/h and drops/min, including weight-based drips.
- 1 Choose rate from volume and time, rate from a dose, or dose from a rate.
- 2 Enter the volume and time, or the dose, drug amount, bag volume and weight.
- 3 Read the pump rate in mL/h and the drip rate in drops per minute.
Example and practical tips
5 mcg/kg/min for a 70 kg patient from 400 mg in 250 mL runs at 13.1 mL/h.
Frequently asked questions
What drop factor should I use?
Check the giving set packaging: standard sets are usually 20 drops/mL (15 in some countries), blood sets 10–15 and microdrip sets 60.
How is mcg/kg/min converted?
Dose × weight × 60 gives mcg per hour, which is divided by the concentration in mcg per mL.
Can I use this to make treatment decisions?
It supports education and clinical decision-making but does not replace clinical judgment, local protocols or product information. Always double-check results.
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