T-Shirt Size Chart & Sizing Guide (2026)

Why Getting the Right T-Shirt Size Matters — Especially for Group Orders

A shirt that doesn't fit is a shirt that doesn't get worn. This is frustrating enough when you're buying for yourself — you can at least return it. In a group order, wrong sizes mean someone ends up with a shirt they'll never put on, and you've already paid for it.

Group shirt orders add several layers of complexity to the sizing problem. Different people have different relationships with their size — some wear fitted, some wear oversized, and many simply don't know their actual measurements in the specific brand you're ordering. Add in the fact that a "large" in Gildan is not the same as a "large" in Bella+Canvas, and you have a recipe for a significant number of misfits.

The good news: this is a solved problem if you give people the right information upfront. A clear size chart with actual measurements — not just letters — dramatically reduces wrong-size orders. This guide gives you that reference for men's, women's, and kids' sizing, and explains how to use it effectively for group orders.

If you're in the middle of planning a group order, you might also want to read our guide on how to collect shirt sizes from your group.

How to Measure Yourself for a T-Shirt

You'll need a soft measuring tape (the kind used for sewing) or a piece of string you can then measure against a ruler. Measure over light clothing or skin — not over a bulky sweater.

Chest measurement

Wrap the tape around the fullest part of your chest, keeping it level across your back and under your arms. Don't pull it tight or let it sag — it should sit snugly but comfortably. This is typically 1–2 inches below your armpit. Note the measurement in inches.

Waist measurement

Wrap the tape around your natural waist — the narrowest part of your torso, usually just above the belly button. Stand up straight but don't suck in your stomach. This measurement is most relevant for fitted women's styles, where the shirt tapers in at the waist.

Body length measurement

Measure from the top of your shoulder (at the base of your neck) straight down to where you'd like the shirt hem to fall. For a standard crew-neck tee, this is typically at or just below the hip. Length matters more than many people realize — a shirt can fit perfectly in the chest but feel too short or too long depending on your torso.

Measuring tip

If you have a t-shirt that fits well, lay it flat and measure it directly — chest width doubled (since you're measuring half the shirt), and from shoulder seam to hem for length. Comparing against a garment you already love is often more accurate than measuring your body.

Men's T-Shirt Size Chart

The measurements below represent typical sizing for men's and unisex t-shirts. Unisex shirts use a more relaxed, boxy fit — if you're between sizes, size up for a more comfortable fit or size down for a trimmer look.

All measurements are in inches. Chest measurements refer to body measurements (not garment width). Garment chest width will be approximately 1–2 inches larger to allow for comfortable movement.

Women's T-Shirt Size Chart

Women's t-shirts are cut with a narrower shoulder, a more tapered waist, and a shorter body length than unisex styles. If you're offering both unisex and women's options for your group, make sure everyone knows which style they're choosing — sizing across the two is not directly comparable.

A common guideline: women who prefer a relaxed fit often find that a unisex small or medium works better than a women's fitted style in the same labeled size.

All measurements are in inches and refer to body measurements. Women's fitted styles run roughly 1–2 sizes smaller than equivalent unisex shirts.

Youth & Kids T-Shirt Size Chart

Youth sizing is based on age ranges, but children vary widely in size. For group orders, always go by measurements rather than age — especially for kids between sizes. When in doubt, size up: kids grow fast and a slightly larger shirt has more staying power than one they outgrow in a month.

Youth sizing varies more between brands than adult sizing. Always check the specific brand's chart when ordering kids' shirts.

Size Differences Between T-Shirt Brands

One of the most common sources of sizing confusion in group orders is brand inconsistency. A medium in one brand can fit like a large in another. Here's a quick rundown of the most popular t-shirt brands used for group orders:

Gildan (e.g., G500, 18000)

Gildan is the workhorse of the screen-printing world — affordable, durable, and widely available. Their sizing tends to run large and boxy. A Gildan medium measures approximately 20 inches wide (chest) and 28 inches long. If you're used to more fitted styles, consider sizing down.

Bella+Canvas (e.g., 3001, 6004)

Bella+Canvas makes fashion-forward blanks with a softer hand feel and a more athletic, contemporary fit. Their sizing runs true to size or slightly fitted — a Bella+Canvas medium is narrower in the chest and shorter in the body than a Gildan medium. Popular for events where appearance matters as much as comfort.

Next Level Apparel

Next Level sits between Gildan and Bella+Canvas — slimmer than Gildan but not as fashion-fitted as Bella+Canvas. Their 6210 crew is popular for groups that want a retail feel. Sizing is consistent but lean; people who wear a Gildan large may prefer a Next Level XL.

District (formerly District Threads)

District makes reasonably priced blanks with a more relaxed fit than Bella+Canvas but slimmer than traditional Gildan. Their DT6000 is a popular everyday tee with sizing that's generally true to standard size charts.

The key takeaway

Always share the specific brand's size chart with your group, not a generic one. The measurements in this guide are a solid starting point, but once you've selected your shirt style, pull the measurements directly from that brand's spec sheet. Differences of an inch or two in the chest can determine whether someone gets a shirt they love or one they donate.

Tips for Ordering Group Shirts and Getting Sizes Right

Even with the best size chart and the most organized collection process, group orders have a few predictable problem areas. Here's how to avoid them.

When in doubt, size up

Shirts shrink, especially 100% cotton. A shirt that fits perfectly before washing may feel snug after a few trips through the dryer. For group orders where you're not giving people a chance to try the shirt on first, size up by default if someone is between two sizes. An oversized shirt is wearable; one that's too tight rarely gets worn.

Order a sample first if your budget allows

For orders of 30 or more shirts, the cost of a sample blank is negligible relative to the cost of getting everyone the wrong size. Order one blank in your chosen style — one medium and one large if you want to compare — and let a few people try them on before you finalize quantities. This is especially important if you're ordering a brand your group hasn't worn before.

Provide size charts to your group before they submit

Don't rely on people knowing their size in the specific shirt you're ordering. Share a link to this guide, or share the brand's official size chart, before you ask for submissions. The 30 seconds it takes a person to check their measurements is worth it.

Planning a large group order? See our guides for family reunion shirts and bachelorette party shirts for more event-specific advice.

Separate unisex and women's sizing clearly

If you're offering both, make it crystal clear which chart applies to which style. A women's medium is not the same as a unisex medium — and someone who orders a women's medium expecting unisex fit (or vice versa) will be disappointed. Label everything explicitly.

Order a few extra blank shirts

In any group order of 20 or more, someone will end up wanting a different size, a late addition will join after the deadline, or you'll discover a miscommunication. Having 2–3 extra shirts in the most popular sizes (usually M, L, and XL) gives you flexibility without a large additional cost.

How GGROUPT Helps With Group Shirt Sizing

The biggest cause of wrong-size group orders isn't negligence — it's information gaps. People pick a size from a dropdown without measurements in front of them. They guess based on what they've worn in a completely different brand, in a completely different cut, years ago.

GGROUPT addresses this directly. When a group member opens their size submission link, they don't just see a dropdown of letters — they see:

• The actual shirt style being ordered, with photos
• An interactive size chart with chest and length measurements for that specific shirt
• Clear differentiation between unisex and women's sizing if both are available

This context — right at the moment of selection — is what reduces wrong-size submissions. People make an informed choice instead of a guess. The result is fewer emails from unhappy group members and fewer shirts that get shoved to the back of a closet.

On the organizer side, you get a live dashboard showing who's responded and a real-time size breakdown. When collection closes, your quantities are calculated automatically and ready to feed directly into your order. No manual counting, no spreadsheet formulas, no copy-pasting.

You can also read our full comparison of size collection methods to see how GGROUPT stacks up against Google Forms and spreadsheets.