Youth Shirt Size Chart: Sizes, Ages, Measurements

A youth shirt size chart maps each youth size to an age range and a real garment measurement, so you can order tees that fit a class, team, or camp before you print a single logo. Youth sizing trips people up because kids the same age can be very different in size, and because youth XL overlaps with adult small. This guide gives you the youth measurements, shows you how to measure a child correctly, and explains the age-to-size crossover so your order fits the group the first time.

At Arklavo we have printed youth tees for schools, sports teams, camps, and youth groups across the country, and the same two sizing questions come up every time: what size for what age, and how does youth line up with adult. Below are the measurements, sourced from the published manufacturer spec, plus the practical advice we give every customer outfitting a young group.

The youth shirt size chart (XS to XL)

Youth tees run from XS through XL, mapping roughly to ages 4 to 20, with body length from about 20.5 inches to 26.5 inches and chest width from 16 to 20 inches. The chart below pairs the common youth age ranges with the manufacturer measurements for the Gildan 5000B Heavy Cotton youth tee, which is one of the most-ordered youth blanks and a good reference point for the category.¹ Chest width is measured flat, one inch below the armhole, so double it for the full circumference.

Treat the age column as a guide, not a rule. A tall ten-year-old can wear a youth large while a smaller twelve-year-old sits in a medium, and most makers allow one to three inches of variation in the listed dimensions.¹ For how these youth sizes connect to the adult tee range, our ultimate t-shirt size chart guide lays out the full picture.

How to measure a child for a shirt

The most reliable way to size a child is to measure a shirt that already fits well and match its chest width and body length to the chart, rather than going by age. Kids grow in spurts, so age alone misses as often as it hits. A flat measurement of a favorite tee removes the guesswork.

Lay a shirt the child already wears comfortably on a flat surface and smooth out the wrinkles. For chest width, measure straight across from one underarm seam to the other, about one inch below where the sleeve meets the body. For body length, measure from the highest point of the shoulder near the collar straight down to the hem. Match both numbers to the youth chart and pick the closest row. If the child is between sizes or growing fast, sizing up one gives a little room and a longer wear life, which matters when you are buying for a whole season. Our free size converter helps when an order mixes youth and adult sizing.

Where youth sizing meets adult sizing

Youth XL overlaps closely with adult small, so an order that spans older teens and young adults can often bridge the two with those two sizes. A youth XL lists a 20 inch flat chest, which is 40 inches around, close to an adult small at 18 inches flat, or 36 inches around. The body length differs more, with the adult small running a few inches longer, so the adult size reads longer through the torso.

This crossover matters most for groups like middle and high school teams, where the roster runs from young teens to nearly adult-sized students. For those orders, offering youth L, youth XL, and adult S together usually covers the middle of the group, with adult sizes carrying the larger end. When in doubt for an older teen, the adult small gives a longer, more grown-up fit, while youth XL keeps the shorter youth proportion. For the adult side of this comparison, see our Gildan size chart guide.

Youth, toddler, and the gap below XS

Youth XS starts around ages 4 to 5, and for younger children you move into toddler sizing, which uses its own age-based scale below the youth range. The youth chart above does not stretch down to babies and toddlers, so if your order includes very young children, you will be picking from toddler sizes such as 2T, 3T, and 4T rather than youth XS.

For a family event, a church group, or a community team that spans a wide age range, it helps to split the order into toddler, youth, and adult bands and collect a size for each child rather than assuming by age. Toddler tees are cut shorter and wider for the proportions of a young child, so they are not simply a smaller youth shirt. If your group needs toddler sizes alongside youth, tell us in the quote and we will source the right base so the whole run matches in look and decoration, even across the size bands.

Toddler size quick reference

Toddler tees use a simple age-based scale where the number matches the age, so 2T fits around age 2, 3T around age 3, and so on up to about 5T before youth XS takes over. The T stands for toddler, and the cut is shorter and a little wider than youth sizes to suit a young child's proportions. Use this quick reference when an order reaches below the youth range.

Because toddler measurements vary more between brands than youth or adult sizes do, measuring a shirt that fits is even more useful here. If your order spans toddler and youth, collecting a size per child keeps the run from leaning too small or too large at the young end. Tell us the age range up front and we will source a toddler base that matches the youth and adult tees in look and decoration.

How youth blanks fit and feel

Most youth tees use the same heavy cotton or soft ringspun fabrics as their adult counterparts, scaled down to youth proportions, so a youth tee fits like a smaller version of the adult blank. The Gildan 5000B, for example, is the youth version of the adult 5000 Heavy Cotton tee, sharing the fabric and the print surface. That means a youth and adult order can use the exact same artwork and decoration and still match.

Youth cuts run a little roomier than fitted adult fashion tees, which is sensible for active kids who need movement. Heavy cotton youth tees hold up to repeat washing and rough wear, which makes them the right call for sports and camps, while softer ringspun youth tees suit a more retail-style spirit shirt. If durability is the priority, lean heavy cotton. If softness and a premium feel matter more, a ringspun youth blank is worth the small step up. We can quote either and match it to the adult sizes in the same order.

Youth spirit wear, camps, and event shirts

Youth tees are the workhorse of school spirit wear, summer camps, youth sports, and community events, because they are affordable, durable, and easy to print in bulk across a wide size range. These are the orders we see most on the youth side, and each has its own sizing rhythm worth planning for.

School spirit shirts usually span a few grade levels, so the spread leans on youth medium and large with a tail into small and XL. Summer camps tend to run younger, which pushes the spread toward XS, small, and medium, and often calls for a brighter color that holds up to a season of hard wear. Youth sports teams frequently mix older kids who sit near adult sizes, so plan for the youth-to-adult crossover and keep a few adult smalls on hand for the biggest players. For a community or family event, expect the widest range of all, from toddler through adult, and collect sizes rather than guessing. In every case, a heavy cotton tee earns its place because it survives repeat washing and active kids, which is exactly what a spirit or event shirt needs to do.

Sizing a youth team, class, or camp order

The safest way to size a youth group order is to collect a real size for each child with a short form, then order a single sample before the full run, all with no minimum in the way. Guessing a size spread for thirty kids from a roster of ages is where youth orders go wrong, because the age-to-size match is loose and growth varies.

Send parents or coaches a simple form with the youth chart attached and ask for either a measurement or the size of a shirt that fits. Total the responses into a spread, lean it toward youth medium and large for a typical school-age group, and add XS, S, and XL based on the actual roster. Because we hold no minimums, you can order one youth tee to approve the print and confirm the fit before committing the whole class or team. For a season-long shirt, sizing up one across the order builds in a little growing room so the tees still fit late in the year.

Decoration and logo placement on youth tees

A logo on a youth tee should be scaled down from the adult size, because a graphic sized for an adult chest looks oversized on a youth XS or small. The print or embroidery method is the same as adult tees, but the dimensions and placement need to suit the smaller canvas so the design reads well across the size range.

A left-chest mark and a centered front graphic are the common youth placements, and both should shrink in proportion for the smaller sizes. A useful approach for a mixed youth-and-adult order is to set one print size that works on a youth medium and reads fine up to an adult, rather than a graphic so large it overwhelms the little ones. Our t-shirt logo placement guide covers the sizing and position, and if you want a stitched crest on a heavier youth piece, the embroidery cost guide explains when thread is the right call.

Common youth sizing mistakes to avoid

Most youth order problems come from ordering by age instead of measurement, forgetting the youth-to-adult crossover, or skipping the sample, and all three are easy to avoid. Youth sizing has a little more spread than adult sizing because of how differently kids grow, so a few habits matter even more here.

The first mistake is trusting age alone, which leaves a pile of mediums that do not fit the tall and the small kids on the roster. Collect a real size for each child instead. The second is forgetting that older teens may need an adult small rather than a youth XL, which catches out middle and high school orders. The third is sizing everyone snug and ignoring that kids grow, so a season shirt is tight by spring. The fourth is skipping the single sample, which is the cheapest insurance there is. Share the chart, collect real sizes, size up a touch for growing room, and approve one tee before the full run.

Putting the youth shirt size chart to work on a real order

The fastest way to use this youth shirt size chart is to attach it to a short size form, ask each family for a measurement or a known good size, then order a single sample before the full run. A chart only helps when the group actually uses it, so make it simple. Drop the youth table into your form, add the two-line measuring steps, and ask for a chest width or the size of a shirt that fits rather than the child's age.

Here is the workflow we recommend for a youth group. First, share the chart and collect a real size for each child. Second, total the responses into a spread and flag anyone between two rows or near the youth-to-adult line. Third, order one tee in the most common size to approve the print and the fit in person. Fourth, place the full order in the exact spread, with a little growing room built in for a season shirt. Because we hold no minimums, that approval step costs almost nothing and removes the loose age-to-size guess that trips up most youth orders. For the full youth-and-adult picture in one place, keep our t-shirt size chart guide open alongside.

What I tell schools and coaches about youth sizing

When a coach or a teacher comes to me with a youth order, the first thing I say is to stop sizing by age. Age is where you start, not where you finish. The groups that get a clean fit are the ones that send a quick form, ask for a measurement or a known good size, and give the kids who are between sizes a little room. The groups that struggle are the ones that guessed from a roster and ended up reordering for the kids who fell through the gaps.

The other thing I flag is the youth-to-adult line. Older students often need an adult small, and missing that is the single most common youth order mistake I see. The chart and the single-sample step in this guide handle both problems. Measure once, confirm a real tee, and the team run fits the whole group from the smallest to the biggest.

How to order custom youth tees with Arklavo

To order, send your logo and rough sizes, approve a proof and a single sample, then place the full run, all with no minimum and free shipping over 150 dollars. We print youth tees with screen print, direct-to-garment, and heat transfer, and we ship most orders in about two days. New customers can use code FIRST15 for 15 percent off a first order.

Start by browsing the custom apparel collection to pick your blank and color, or send your design for a quote and a proof on the real youth tee. We can match youth and adult sizes in the same order with the same artwork, so a team that spans kids and coaches stays consistent head to toe. Either way, we confirm the fit before anything goes to print.

Youth shirt size chart FAQ

Sources

1. Kerr's Cotton, Gildan T-Shirt Size Chart (manufacturer's sizing, 5000B youth): kerrscotton.com
2. Gildan, official 5000B Heavy Cotton Youth T-Shirt product information: gildan.com