1. Clark's formula:
Child's dose = weight in (lbs)/150 × Adult dose
Child's dose = weight in (kg)/70 × Adult dose
2. Dilling's formula: Used
for calculating a dose of a child from 12-20 years of age.
Child's dose = Age in years /20 × Adult dose
3. Fried's formula:
Used for calculating a dose of an infant up to 24 months of age.
Child dose = Age in months /150 × Adult dose
4. Young's formula:
Used for calculating a dose of a child from 1-12 years of age.
Child dose = Age in years/Age 12 × Adult dose
5. Cowling's formula:
Child's dose = Age at next birthday/24 × Adult dose
6. Bastedo's Formula:
Child's dose = Age in Years/ 30 × Adult dose
7. Calculation based on body surface area:
Child's dose = body surface area of the child/1.73 sq. m × Adult dose