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Under Armour Men’s Size Chart

In Under Armour men’s tops, LG fits a 41–44″ chest, XL fits 44–48″ and XXL fits 48–52″. Enter your measurements and we’ll call it when you’re between two sizes, and pick the right length for your height. The chart it’s based on is right below, checked against the official Under Armour size guide on 31 Oct 2026.

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Find your Under Armour tops size

Height (optional) How to measure Height Stand straight against a wall and measure from the top of your head to the floor. General guidance — not brand-specific Stand straight against a wall and measure from the top of your head to the floor.
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Length:
Regular-length body measurements, in inches.
Size ChestWaist
XS 31–34 28–29
SM 34–37 29–31
MD 37–41 31–34
LG 41–44 34–37
XL 44–48 37–41
XXL 48–52 41–45.5
3XL 52–56 45.5–50
4XL 56–60 50–54.5
5XL 60–64 54.5–59
Tall lengths

Some Under Armour tops also come in Tall lengths — same body measurements, just cut longer or shorter. Pick the one for your height:

  • Regular — for men up to 6′2″
  • Tall — for men above 6′2″

Not every product comes in every length.

Under Armour sells Tall (about 2″ longer) as a toggle on the product. It says who Tall is for only once, on its UA Drive Joggers (above 6′2″), and we use that across its tops and bottoms; 6′2″ and under is Regular. Its charts give no sleeve or inseam lengths, though each bottom’s Length choice shows its inseam. Tall doesn’t change your size, only the length.

How we sized thissized by chest
  • Sold as letter sizes (XS–5XL). If your product’s size options look different, use the tab that matches them.
  • One Under Armour chart covers every men’s top — tees, polos, hoodies, quarter-zips, jackets, compression and baselayers (all 602 we read print it) — sized by chest with waist as a check.
  • Tall (SMT and up, behind a Tall toggle on the product) keeps the same chest and waist and runs about 2″ longer, so your size is the same either way. No top sells an XS Tall, and 5XL Tall was sold out on every top that lists it when we checked.
  • UA’s padded football tops print their own chart (S–XXXL, cut to fit over pads), so use the chart on those products. UA’s unisex tops — its UNLESS collaboration hoodies, crews and tees and two collegiate jerseys — use this chest chart (a unisex MD fits a 37–41″ chest; their size guide misprints it), so size them here.
Source & accuracy checked 31 Oct 2026

Source: official Under Armour size guide

Last checked: 31 Oct 2026

These are body measurements — measure your own body, not a garment you own.

SizeSimply is an independent tool — not affiliated with, endorsed by, or sponsored by Under Armour.

Your size at other brands

Enter your measurements above and we’ll show what to order everywhere else, too — same measurements, each brand’s own chart.