Result preview
Submit the calculator to display the result here above the form, along with the Plotly infusion graph and export buttons.
Calculator
Choose a calculation mode, enter the values, and press submit. Large screens show three columns, medium screens show two, and phones show one.
Example Data Table
| Scenario | Inputs | Key Result |
|---|---|---|
| Standard pump rate | 1000 mL over 8 hours | 125.00 mL/hr |
| Dose-based infusion | 5 mcg/kg/min, 70 kg, 400 mg in 250 mL | 13.13 mL/hr |
| Gravity conversion | 500 mL over 4 hours, 15 gtt/mL set | 31 gtt/min rounded |
Formula Used
1) Standard pump rate
mL/hr = Total Volume (mL) ÷ Time (hr)
Use this when the order gives a fluid volume and a target infusion time.
2) Gravity drip rate
gtt/min = [mL/hr × Drop Factor (gtt/mL)] ÷ 60
This converts a pump-style hourly rate into a drops-per-minute setting for gravity tubing.
3) Dose-based infusion rate
mL/hr = Required Dose per Hour ÷ Concentration per mL
For weight-based infusions:
Required Dose per Hour = Ordered Dose × Weight × Time Conversion
The calculator also converts mcg, mg, g, and units so the final rate matches the bag concentration correctly.
How to Use This Calculator
- Select the correct calculation mode for your task.
- Enter the prescribed values exactly as written.
- Choose the proper time and dose units.
- For dose-based infusions, enter patient weight only when required.
- Enter the total drug amount and final solution volume for concentration-based calculations.
- Press Submit to show the result above the form.
- Review the summary table, graph, and estimated bag duration.
- Use the CSV or PDF button to save the result.
FAQs
1) What does this calculator solve?
It calculates standard IV pump rates, dose-based infusion rates, and gravity drip conversions. It also estimates completion time, bag duration, and displays an infusion trend graph.
2) When should I use the standard mode?
Use standard mode when the order provides a total volume and a target duration, such as 1000 mL over 8 hours. The tool converts that directly into mL/hr.
3) When is the dose-based mode helpful?
Use dose-based mode for medication infusions ordered in units like mcg/kg/min, mg/hr, or units/hr. It converts the ordered dose and bag concentration into an hourly pump setting.
4) Why does patient weight matter sometimes?
Weight matters for orders written per kilogram, such as mcg/kg/min or units/kg/hr. The calculator multiplies the ordered dose by the patient’s weight before converting to mL/hr.
5) What is drop factor?
Drop factor is the tubing calibration, shown as gtt/mL. Common sets are 10, 15, 20, and 60 gtt/mL. It is needed only for gravity-drip conversions.
6) Why does the graph matter?
The graph helps visualize volume infused versus volume remaining over time. It is useful for checking whether the infusion duration and bag usage look reasonable.
7) Can I use this for every medication?
No. Some medications have strict maximum concentrations, titration rules, or drug-library limits. Always verify the drug-specific order, local protocol, and pump settings before administration.
8) What should I double-check before starting an infusion?
Double-check patient identity, order units, concentration, compatibility, line type, pump library entry, bag volume, and whether the prescribed rate matches your facility’s policy.