RCUK PALS · 2025 · WETFLAG
Paediatric Emergency
Drug Calculator
Weight-based emergency drug doses with APLS weight estimation, WETFLAG and age-appropriate physiology — 40+ drugs across 11 emergency scenarios. Enter an age and the tape below locates the child's weight band.
0–3 mo~5 kg
3–12 mo~8 kg
1–2 yr~11 kg
3–4 yr~15 kg
5–6 yr~20 kg
7–8 yr~28 kg
9–10 yr~35 kg
11–12 yr~42 kg
13+ yr~50 kg
<1 yr~7 kg
1–3 yr~13 kg
4–6 yr~20 kg
7–11 yr~34 kg
12+ yr~50 kg
Reference only · indicative weight-for-age (APLS)
Enter age below — band lights up automatically →
Patient
yr
mo
days
kg · blank = estimate from age
optional
⚕
Enter an age and/or weight above to generate weight-based drug doses.