Calculator Form
Example Data Table
| Scenario | Weight | Mode | Dose Factor | Frequency | Concentration | Example Outcome |
|---|---|---|---|---|---|---|
| Sample Suspension A | 18 kg | Per administration | 15 mg/kg/dose | 3/day | 250 mg in 5 mL | 270 mg per dose, 5.4 mL per dose |
| Sample Tablet B | 70 kg | Total daily dose | 10 mg/kg/day | 4/day | Not used | 700 mg/day, 175 mg each administration |
| Sample Infusion C | 12 kg | Continuous infusion | 5 mcg/kg/min | Not used | 400 mg in 250 mL | 3.6 mg/hr, 2.25 mL/hr |
Formula Used
1) Weight conversion: kg = lb / 2.20462
2) Ideal body weight: Male IBW = 50 + 2.3 × (height in inches − 60). Female IBW = 45.5 + 2.3 × (height in inches − 60).
3) Adjusted body weight: AdjBW = IBW + factor × (Actual BW − IBW)
4) Per administration mode: Dose per administration = min(dose factor × dosing weight, maximum single dose, maximum daily dose / frequency)
5) Daily mode: Daily dose = min(dose factor × dosing weight, maximum daily dose, maximum single dose × frequency)
6) Continuous infusion mode: Hourly rate = min(dose factor × dosing weight × 60, maximum hourly rate, maximum daily dose / 24)
7) Volume conversion: Volume = dose amount ÷ prepared concentration
8) Unit handling: All mass entries are normalized internally to milligrams, then returned in the selected display unit.
How to Use This Calculator
Enter the patient weight and choose kg or lb. Add height and sex only if you want ideal or adjusted body weight calculations.
Select the dosing mode. Use per administration for mg/kg/dose style inputs, daily mode for mg/kg/day style inputs, and infusion mode for unit/kg/min style inputs.
Enter the dose factor and the mass unit. Add optional maximum single, daily, or infusion limits to apply safety caps.
Enter concentration details when you want the calculator to convert mass into mL values or pump settings.
Press Calculate Dose. The result appears above the form, followed by a Plotly graph, downloadable CSV output, and a PDF summary.
FAQs
1) What does this calculator estimate?
It estimates weight based dose amounts, daily totals, infusion rates, dose volumes, and optional capped results using the limits you enter.
2) Can I switch between actual, ideal, and adjusted body weight?
Yes. The form supports actual body weight, ideal body weight, and adjusted body weight, provided you supply enough information for the selected method.
3) Does the page support infusion calculations?
Yes. Continuous infusion mode converts unit/kg/min input into hourly mass delivery and, when concentration is entered, into mL per hour.
4) Why are concentration inputs optional?
Some workflows need only mass calculations. Concentration becomes necessary when you want volume per dose, daily volume, or pump rate values.
5) How are safety limits applied?
The page compares the raw calculation with the optional single, daily, and infusion caps you provide, then returns the lower allowed result.
6) What does the graph show?
The graph shows how the calculated dose changes across a weight range while keeping the remaining settings unchanged.
7) Can I export the result?
Yes. After calculation, you can download the displayed result as a CSV file or save a PDF summary directly from the page.
8) Is this page enough for real prescribing?
No. It is a calculation aid only. Final clinical decisions still require drug references, patient-specific review, and licensed professional verification.