Weight-Based Dose
Compute a total dose from a per-kilogram dose and a patient weight using the standard formula total = weight (kg) * dose per kg.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Weight
- 70 kg
- Dose per kg
- 5
- Dose unit for the printed total
- mg/kg
Result: Total 350 mg
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Weight
- Dose per kg
- Dose unit for the printed total (e.g. mg/kg; defaults to "units")
What this is
Sophie Well accepts mg/kg, mcg/kg, units/kg, and mL/kg, returns the rounded total, and surfaces the underlying math so the bedside calculation is auditable.
When to use it
Use this for any weight-based medication order - pediatric antibiotics, heparin bolus, anesthesia induction agents, naloxone, dexamethasone, vasopressors, and so on. The output is arithmetic only; you still have to verify against the institution's formulary and any per-dose maximum (a pediatric weight-based calculation that exceeds the adult ceiling should be capped, not delivered).
How this is calculated
Standard weight-based dose: total = weight * per-kg dose. Verify against your formulary.
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.
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