Pediatric drug dose calculator

Patient
kg
years
 
Shows pregnancy safety on the dose panel
⚡ Reference weight estimate from age (WHO/IAP median) — replace with the measured weight.
Age is required for paediatric dosing and safety checks.
Quick access
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Dose panelSelect a drug to calculate the dose in mg and the syrup, tablet or injection volume for this patient.

Pediatric dose calculator for clinicians

PediaRx turns a child's age and weight into a ready-to-prescribe dose: milligrams per dose, the syrup or drops volume for the strength on the bottle, practical tablet fractions and, for hospital drugs, the volume to draw up. Every regimen has explicit units, maximum single and daily doses, age and weight limits and a cited source — and it never guesses a dose outside those limits.

Built for busy outpatient clinics and emergency rooms in India and worldwide: it works offline after the first visit and on low-end phones.

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Common questions

Is PediaRx free?

Yes. PediaRx is free for clinicians, with no account, no adverts and no subscription.

Does PediaRx work offline?

Yes. After the first visit the calculator, the formulary and the fonts are stored on your device, so doses calculate without a network. You can also install it as an app.

Where do the doses come from?

Each regimen cites its source — BNF for Children, WHO Pocket Book, IAP, AAP/IDSA guidelines or the product label. Open “Sources & review” on any dose panel.

Does PediaRx store patient data?

No. Age, weight and sex never leave your device. Anonymous page analytics record which drug pages are opened, never patient details.