Kids size calculator
Set the birth year and today's sizes. The numbers build on how kids grow on average, so read them as direction, not promise.
Birth year
Clothes
104
Shoes
27
The pace is real: in the first year, a clothing size lasts about three months. At four, a size holds closer to ten months, and a ten-year-old often gets over a year from one. Shoes turn over faster, around half a year per size at four.
The average says nothing about your particular child: two healthy siblings can sit a full size apart at the same age. The calculator gives a direction; a tape measure in the hallway gives the answer.
Stillfits keeps the numbers for you: today's sizes, the next size and the buy list, shared with whoever you shop with.
Open the app