Work out infant growth velocity instantly with clear inputs, formula shown and shareable results.
Divides the weight change by the interval to give daily and weight-indexed growth velocity, the measure used to judge adequacy of feeding.
Growth velocity
Grams per day = (current weight - earlier weight) / days; grams per kg per day = grams per day / earlier weight in kg
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Roughly 25 to 35 g a day in the first three months, falling to about 15 to 20 g a day by six months.
Preterm growth targets are expressed as 15 to 20 g/kg/day, which accounts for the baby's starting size.