Gifting guide

Baby & Toddler Size Chart: Clothes and Shoes by Age

Buying clothes or shoes for a little one — and not sure what size they wear right now? Use these charts as a starting point. They show typical US sizes by age, weight, height, and foot length.

Baby and toddler clothing size chart

Baby sizes are labeled in months, then switch to "T" (toddler) sizes around age 2. Weight and height are a better guide than age.

Size	Weight	Height
Preemie	Up to 5 lb	Up to 17 in
Newborn (NB)	5–8 lb	17–21.5 in
0–3 months	8–12.5 lb	21.5–24 in
3–6 months	12.5–16.5 lb	24–26.5 in
6–9 months	16.5–20.5 lb	26.5–28.5 in
12 months	20.5–24.5 lb	28.5–30.5 in
18 months	24.5–27.5 lb	30.5–32.5 in
24 months / 2T	27.5–30 lb	32.5–35 in
3T	30–33 lb	35–38 in
4T	33–37 lb	38–41 in
5T	37–41 lb	41–44 in

Baby and toddler shoe size chart

US baby and toddler shoe sizes by approximate age and foot length (heel to longest toe).

Approx. age	US shoe size	Foot length
0–3 months	1	3.5 in
3–6 months	2	3.75 in
6–9 months	3	4.125 in
9–12 months	4	4.5 in
12–18 months	5	4.75 in
18–24 months	6	5.125 in
2 years	7	5.5 in
2.5 years	8	5.75 in
3 years	9	6.125 in
3.5–4 years	10	6.5 in
4–4.5 years	11	6.75 in
5 years	12	7.125 in

Tips for buying the right size as a gift

Go by weight and height, not age

Kids grow at their own pace. If a 9-month-old is already 21 lb, a 12-month size will fit better than 6–9 months.

When in doubt, size up

Babies outgrow clothes fast. One size up gives a gift more wear — and is far less likely to be outgrown before it's opened.

Think about the season

A 12-month snowsuit is only useful if the child is that size in winter. Count forward to when the gift will actually be worn.

Measure feet, don't guess

Have the child stand, then measure heel to longest toe. Add about half an inch of growing room for shoes.

Brands run differently

European and boutique brands often run small or label by age in centimeters. Check each brand's own chart when you can.

Charts show typical US sizing. Every brand fits a little differently, so check the brand's own chart when you can.

Skip the guessing — save their real sizes in Baby Sesame

Charts are a starting point, but nothing beats knowing. With Baby Sesame, parents keep their child's current clothing and shoe sizes, favorites, and wishlists in one place — so grandparents, family, and friends always buy the right size.

Join the Baby Sesame waitlist