Health & Fitness
IV Infusion Flow Rate Calculator
Calculate pump flow rate in mL/hour and infusion duration for a prescribed volume.
Preparing your result…
What this calculator does
Calculates IV Infusion Flow Rate Calculator using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
Flow rate (mL/hr) = volume (mL) ÷ time (hours)
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • Volumetric infusion rate mL/hour=volume mL/time hours. If time is minutes, rate=60×volume/time minutes. Drug delivery mass/hour=rate×concentration mass/mL only if that output is requested.
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • Time must be positive and units explicit. Drug concentration is irrelevant to the plain volume/time result but essential to mass dosing. This arithmetic does not select a clinically suitable dose or infusion speed; gravity drops/min additionally require the tubing drop factor.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | Volume to infuse (mL) | Infusion time (hours) | Drug concentration (mg/mL) | Pump flow rate |
|---|---|---|---|---|
| Worked example | 1,000 | 8 | 0 | 125 mL/hour |
| Half the amounts | 500 | 4 | 0 | 125 mL/hour |
| Double the amounts | 2,000 | 16 | 0 | 125 mL/hour |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
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