Under Armour Men’s Size Chart

Your Under Armour size, from your measurements. 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.

Find your Under Armour tops size

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Length:

Regular-length body measurements, in inches.
Size	Chest	Waist
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′1″ (est.)
Tall — for men over ~6′1″ (est.)

Not every product comes in every length.

Under Armour offers Tall sizes (about 2″ longer) but publishes no height for them and no sleeve or inseam lengths, so we can only estimate: we switch to Tall at about 6′1″ — bracketed by peers (Nike 6′0″, Adidas 6′2″). Tall doesn't change your size, only the length.

How we sized thissized by chest

Sold as letter sizes (XS to 5XL). If your product's size options look different, use the tab that matches them.
Under Armour uses one size guide for tops, sized by chest with waist as a check. Tall versions are the same chest and waist — only about 2″ longer in the sleeve — so your size is identical either way.

Source & accuracy checked 9 Jul 2026

Source: official Under Armour size guide

Last checked: July 9, 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.

Find your Under Armour pants size

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Length:

Regular-length body measurements, in inches.
Size	Waist	Hip
XS	28–29	33–34
SM	29–31	34–36
MD	31–34	36–39
LG	34–37	39–42
XL	37–41	42–46
XXL	41–45.5	46–50
3XL	45.5–50	50–54
4XL	50–54.5	54–58
5XL	54.5–59	58–62

Tall lengths

Some Under Armour pants 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′1″ (est.)
Tall — for men over ~6′1″ (est.)

Not every product comes in every length.

How we sized thissized by waist

Sold as letter sizes (XS to 5XL). If your product's size options look different, use the tab that matches them.
Under Armour's bottoms chart lists an equivalent US number (e.g. size MD = 32–33), but the size you buy is the letter, so we recommend by letter. UA doesn't say whether waist or hip should lead, so we go by your waist — the measurement the size is based on — with hip as a secondary check.

Source & accuracy checked 9 Jul 2026

Source: official Under Armour size guide

Last checked: July 9, 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.