Work out paediatric dose (young rule) instantly with clear inputs, formula shown and shareable results.
Applies Young's rule, which scales an adult dose by age divided by age plus twelve for children aged one to twelve.
Young's rule
Child dose = adult dose x age (years) / (age + 12)
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
One to twelve years. Outside that range it has no validity.
Children of the same age vary widely in size, so weight or body surface area tracks drug handling far better.