Size 140 means the garment fits a child about 140 cm (55 in) tall and is closest to a US size 10, in the 10-12 range. For age, Lands' End's size charts print the age label 9-10 yrs next to US size 10 for boys and 10-11 yrs for girls. On European and international labels the number is the child's height in centimeters, not an age, so measure your child's height and round up to be sure.
Key takeaways
- Size 140 = a child about 140 cm (55 in) tall, closest to a US size 10 (you will also see it written as 10-12).
- It is a height, not an age. The "140" is centimeters.
- The US number differs by brand chart: on the boys or kids charts we read, 55 in is size 10 at four brands and a combined size 10-12 at two. In our Size Index of 30 brands sold in the US, the same printed label routinely spans two sizes.
- Neighbors depend on the label's steps: on 6 cm steps, 134 sits below 140 and 146 above it; on 10 cm steps, as on Hanna Andersson's chart, they are 130 and 150.
- To be sure, measure standing height, round up to the next number, then confirm with weight and the brand's own size chart.
What size is 140 in kids' clothes?
Size 140 fits a child about 140 cm (55 in) tall and is closest to a US size 10. Nike and Under Armour print one combined size 10-12 for 55 in, so you will also see it written as 10-12. The number comes from the European and international system, where the label is the child's height in centimeters rather than an age. For the whole system, from size 50 to 140, see our European and international size conversion chart (50 to 140).
What height, age, and weight does size 140 fit?
Size 140 means a height of about 140 cm (55 in). Hanna Andersson's kids chart, read on October 1, 2026, prints its 140 cm size next to US size 10, for a height of 54-58 in and a weight of 62-80 lb. Lands' End's size charts print the age label 9-10 yrs next to US size 10 on the boys chart (54-56 in, 68-80 lb) and 10-11 yrs on the girls chart (55-57 in, 71-87 lb). Nike's charts print ages 10-12 next to its M (sizes 10-12).
On Hanna Andersson's chart the sizes below and above 140 are 130 and 150:
| Hanna Andersson size (cm) | US size printed | Height printed | Weight printed |
|---|---|---|---|
| 130 | 8 | 50-54 in | 52-64 lb |
| 140 | 10 | 54-58 in | 62-80 lb |
| 150 | 12 | 58-62 in | 75-95 lb |
The ages and weights here are what the named brand charts print, so fit by your child's measured height, not the number on their last birthday cake. Babbez covers clothing sizing only. For any question about your child's growth, weight, or development, talk to your pediatrician and see our medical disclaimer.
What is size 140 in US kids sizes?
Size 140 is closest to a US size 10. On October 1, 2026 we read the boys or kids size chart of 6 brands that print a US size next to a height range: 55 in falls in size 10 at Old Navy, Lands' End, Target and Hanna Andersson, and in a combined size 10-12 at Nike and Under Armour. The honest reason it is a range and not one clean number: brands print their own height ranges next to their US numbers (8, 10, 12, 14), while 140 is a fixed height. On the letter scale it depends on the brand: sizes 10-12 are a Youth Medium (YM) at Nike, Under Armour and Gildan, and a Youth Large at Lands' End and Old Navy. For the full grid of US kids and youth numbers with heights and weights, see our kids and youth clothing size chart by age and height.
Why does the same size 140 fit differently across brands?
Because a label is a promise, not a measurement, and each brand prints its own size chart. When we compared 30 brands sold in the US for our Size Index (September 2026), the same printed label routinely spanned two sizes — "3-6M" alone tops out anywhere from 14.5 to 20 lb depending on the brand. Brand charts differ at this height too. This is the size each brand's own chart prints for a height of 55 in (140 cm), as we read the charts on October 1, 2026:
| Brand | Boys chart | Girls chart |
|---|---|---|
| Old Navy | size 10 (54-57 in) | size 8 (53-55 in) or size 10 (55-57 in) |
| Lands' End | size 10 (54-56 in) | size 10 (55-57 in) |
| Target Cat & Jack | size 10 (54-56 in) | size 10 (53-56 in) |
| Nike | M, sizes 10-12 (54-58 in) | M, sizes 10-12 (54-57 in) |
| Under Armour | YMD, sizes 10-12 (53-59 in) | YMD, sizes 10-12 (53-58½ in) |
| Hanna Andersson | one kids chart: size 140 cm, US 10 (54-58 in) | |
| Gap | L, no US number printed (54-57 in) | L, no US number printed (54-57 in) |
Each cell is the size whose printed height range includes 55 in, with that range. Old Navy's girls chart prints 55 in as the end of size 8 and the start of size 10. Target has a second Cat & Jack boys chart that prints size 10 as 53-55 in.
The takeaway: check the manufacturer's own size chart against your child's measured height before you buy, especially online where you cannot try it on. Our baby and kids clothing Size Index tracks these differences brand by brand.
Is size 140 the same for boys and girls?
Hanna Andersson's kids chart, the centimeter-sized chart we read, is one chart that is not split into boys and girls, so its 140 cm size is the same for both. At 55 in, 4 of the 5 brands whose boys and girls charts both print a US size (Lands' End, Target, Nike and Under Armour) print the same size on both; Old Navy's boys chart prints size 10, and its girls chart prints 55 in as the end of size 8 and the start of size 10. The printed height range can differ even when the size is the same: Lands' End prints size 10 for 54-56 in on its boys chart and 55-57 in on its girls chart. So pick the number by height, then check the brand's boys or girls chart.
Can I buy size 140 with room to grow?
Yes, for everyday clothes. Going a full size up purely to grow into it works for coats, sweatshirts, and pants you can cuff, but it will be loose on fitted tops and dresses that need to sit at the shoulder. Sleepwear is the exception: the CPSC's children's sleepwear flammability rules (16 CFR 1615 and 1616) require most children's sleepwear to be either flame-resistant or snug-fitting, which is why a snug-fit size-140 pajama is not designed to be bought large for room to grow — follow the flame-safety label on the garment itself. When in doubt, measure and confirm with weight rather than buying up on a guess.
How do I know size 140 will actually fit my child?
Measure, don't guess — call it the Measure-First Rule. Stand your child against a wall without shoes, mark the top of the head, and measure floor-to-mark in centimeters. If they measure about 140 cm, size 140 is your starting number. A child already past 140 cm can still be inside a brand's 140: Hanna Andersson's chart prints its 140 for 54-58 in (about 137-147 cm). Then sanity-check the brand's own chart, because as our Size Index shows, the printed number varies by label. Add weight to the picture for a sturdier or slimmer build. Our free baby and kids Size Finder covers baby and toddler sizes only (Preemie to 5T): enter your baby's weight to see the size most of the 30 brands' charts point to.
Sources: U.S. Consumer Product Safety Commission (CPSC) children's sleepwear flammability standards, 16 CFR 1615 and 1616; Babbez Size Index (30 brands sold in the US, September 2026); Babbez European and international size conversion chart (50 to 140); European clothing size-labeling convention (garment size = body height in centimeters, per the EN 13402 body-dimension standard); brand size charts read on October 1, 2026: Old Navy (boys, girls); Lands' End (boys, girls); Target Cat & Jack (boys clothing, second boys chart, girls clothing); Nike (boys, girls); Under Armour (boys, girls); Hanna Andersson (kids); Gap (boys, girls); Gildan (boys tees). Brands change their charts, so check the brand's own chart. Babbez covers clothing sizing only and does not give medical or growth advice — see our medical disclaimer.