Work out drug dose by weight instantly with clear inputs, formula shown and shareable results.
Multiplies body weight by the prescribed dose per kilogram, then converts the milligram dose into a volume using the preparation strength.
Weight-based dose
Dose (mg) = weight (kg) x dose per kg (mg/kg); volume (mL) = dose / concentration (mg/mL)
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Many drugs have an adult maximum that overrides the weight calculation, especially in older children.
Depends on the drug: actual, ideal or adjusted body weight, as stated in the product literature.