💊 Weight-Based Dose Calculator
Weight-based dosing converts a mg/kg target into a single dose, with an optional ceiling to prevent exceeding an adult maximum.
Always reconcile the result against the label's usual and maximum dose, total daily dose, and dosing interval before administration (original synthesis · not guideline verbatim).
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When to use
Enter the mg/kg dose and patient weight, plus an optional per-dose cap; the tool returns the capped single dose and the uncapped value.
How it works
Single dose = dose (mg/kg) × weight (kg); if a cap is provided and exceeded, the dose is limited to the cap.
Key points
- Always reconcile the result against the label's usual and maximum dose, total daily dose, and dosing interval before administration (original synthesis · not guideline verbatim).
- Formulation concentration and required dilution must be checked separately, especially for high-alert drugs.
- Neonates and preterm infants follow distinct dosing standards and are not covered by simple mg/kg scaling.
References
- Institute for Safe Medication Practices (ISMP). Pediatric weight-based dosing safety resources.
- WHO. Pocket Book of Hospital Care for Children, 2nd ed.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Dose | 15 mg/kg |
|---|---|
| Weight | 12 kg |
→Single dose180mg
- Uncapped value：180 mg
Frequently asked questions
- What is Weight-Based Dose Calculator?
- Weight-based dosing converts a mg/kg target into a single dose, with an optional ceiling to prevent exceeding an adult maximum.
- How is Weight-Based Dose Calculator calculated? What is the core formula?
- Single dose = dose (mg/kg) × weight (kg); if a cap is provided and exceeded, the dose is limited to the cap.
- When is Weight-Based Dose Calculator used?
- Enter the mg/kg dose and patient weight, plus an optional per-dose cap; the tool returns the capped single dose and the uncapped value.
- What are the key clinical points for Weight-Based Dose Calculator?
- Always reconcile the result against the label's usual and maximum dose, total daily dose, and dosing interval before administration (original synthesis · not guideline verbatim). Formulation concentration and required dilution must be checked separately, especially for high-alert drugs. Neonates and preterm infants follow distinct dosing standards and are not covered by simple mg/kg scaling.
- What are the limits and cautions when using Weight-Based Dose Calculator?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Weight-Based Dose Calculator calculated in practice? Can you show a worked example?
- Inputs: Dose 15 mg/kg, Weight 12 kg → Result: Single dose 180 mg（Uncapped value: 180 mg）