Basketball Shorts Size Chart | Find Your Fit Fast

Basketball shorts size charts vary by brand, so your waist measurement and preferred length are the two numbers that matter most.

Basketball shorts sizing isn’t standardized across brands, which means a large in one label can fit like a medium in another. The two variables that decide everything are your waist circumference and the shorts’ length — often listed as inseam, outseam, or waist-to-hem. Measure both, compare them to the brand’s chart, and you’ll nail the fit nearly every time.

What Measurements Do You Need?

Before you open any size chart, grab a soft measuring tape. You need two numbers: your natural waist and your preferred short length.

For the waist, measure around your torso at the point where shorts naturally sit — usually right at or just below the belly button. Keep the tape snug but not tight. That number is what you’ll compare against the chart’s waist column.

Length is trickier because brands measure it differently. Some list inseam (the seam from crotch to hem), others use outseam (from waistband to hem), and a few give a simple “style length” like 7 inches. Nike’s NBA shorts chart, for example, lists waist and hip ranges but leaves length to the specific product page.

How Nike’s Basketball Shorts Charts Work

Nike publishes separate charts for men’s and women’s basketball shorts, and they don’t overlap. Men’s NBA shorts range from size S to 3XL, mapping to numeric waist sizes of 30 through 50.

Here’s the catch: adjacent sizes on both charts overlap substantially. Want a looser fit for movement? Size up. Prefer a snugger waistband? Size down.

Common Sizing Mistakes to Avoid

Most ordering mistakes come down to a few repeatable errors. The first is using your T-shirt size as a proxy — shorts fit at the waist and hips, not the chest, so a large shirt says nothing about your shorts size. The second is ignoring the length metric. A chart that lists outseam will give you a different number than one using inseam, and mixing them up means shorts that land at the wrong spot on your leg.

Another frequent miss: confusing inches and centimeters. Some brand charts publish only in cm, and misreading a 33 as 33 inches instead of 33 centimeters changes the fit drastically. Also check whether the chart is for men, women, youth, or custom team uniforms, because these don’t convert into each other. Nike keeps men’s and women’s charts completely separate, and youth sizing follows its own path entirely.

Finally, don’t assume every basketball short has the same cut. Charts often distinguish between regular, long, modern, and classic styles, and the length difference between a “long” and a “short” style can be several inches. A player who wants knee coverage should look for a longer inseam or outseam number, not just a larger size.

Youth Sizing and When to Switch to Adult Shorts

Youth basketball shorts follow their own charts, and they’re shorter than adult cuts by design. Several youth charts specify a 6-inch inseam, which falls well above the knee for most kids. If your young player wants coverage down to the knee, most of those same charts recommend moving into adult sizing — a small adult short often provides that longer length while still fitting a slimmer waist.

That switch matters for more than comfort. League rules sometimes require shorts of a certain length, and privacy concerns are real for older kids. When a youth chart explicitly recommends adult sizing for longer coverage, take that advice at face value.

If you’re shopping for a player ready to buy, our roundup of long basketball shorts picks for men covers tested options that prioritize both coverage and fit. The sizing guidance from Nike’s official chart applies there too, so measure first, then compare.