Family & kids

Baby age, formula per bottle, maternity leave, school year by birth year, sleep needs, shoe size and adult height: handy calculations for parents.

7 calculators
Baby age in weeks and monthsYour baby's exact age in weeks, months and days, with the corrected age if born early.Open →
How much formula per bottleHow many millilitres of formula a day and per bottle, based on your baby's weight and number of feeds.Open →
Maternity leave dates (Belgium, France)Your maternity leave dates in Belgium or France based on your due date.Open →
Child's adult height predictorAn estimate of your child's adult height based on both parents' heights.Open →
Which school year is my child in?Your child's school year from their birth year, in Belgium or France.Open →
Recommended sleep by ageHow many hours a baby, child, teen or adult should sleep, and what time to go to bed.Open →
Shoe size from foot lengthMeasure your child's foot (or yours) and find the right European shoe size.Open →