Do adidas Originals Shoes Run Big or Small?

What the Feetlot Data Says About adidas Originals Sizing

Based on 841 verified pairs across 23 adidas Originals models in the Feetlot database, the brand leans toward the smaller side. On balance, adidas Originals models tend to run a little smaller than the Nike Air Force 1, the reference shoe Feetlot uses as a fixed point. Because the Air Force 1 itself runs about half a size large, that comparison lands adidas Originals close to true to size for most people, with a mild nudge toward sizing up rather than down.

The more useful signal from Feetlot is consistency, and here adidas Originals is only moderate. Most models cluster in a similar sizing band, but the spread is wide enough that the outliers matter. In plain terms: knowing your size in one adidas Originals shoe gets you most of the way there in another, but it is not a guarantee. The heritage court styles in particular trend smaller and narrower than the brand average, while a handful of running-inspired and premium models fit roomier. That is why the model-by-model picture below is worth a look before checking out.

Which adidas Originals Shoes Run Big, and Which Run Small

The split inside adidas Originals tracks closely with category. The classic court and shell-toe silhouettes run the smallest and snuggest, while several track-inspired runners and premium leather builds open up to a fuller, closer-to-true fit.

Models that run small (size up)

These are the ones to size up half a size in, especially if you have a wider foot. The shell-toe icon leads the group: the Superstar 2 is the single most-reported adidas Originals model in the Feetlot database and sits firmly on the small side, which matches its long-standing reputation for a snug, low-volume fit. Its sibling the Superstar 2 - Canvas runs in the same tight territory. The high-top adi High EXT runs the smallest of any adidas Originals model Feetlot tracks, so a full half size up is wise there. The retro runner Dragon and the racing-flat adiSTAR Racer are both narrow, low-slung shapes that come up short on length as well. The Forum Mid RS, a popular high-top, runs small enough that most owners are happier a half size up. Rounding out the snug group are the Orion 2 - Nylon and the suede-built Grand Prix - Nubuck, both of which sit on the small side of the brand average.

Models that fit close to true (buy your normal size)

A second group runs noticeably roomier than the court classics and lands close to true to size, so most people can stick with their usual number. The roomiest of the lineup is the adiRise Mid 2.0 '12, which fits the largest of any adidas Originals model in the data and can even take a half size down for narrow feet. The leather version of the runner, the Grand Prix - Leather, fits fuller than its nubuck twin, and the terrace classic Spezial sits in that same true-to-size pocket. The tennis-heritage Rod Laver - Premium and the retro runner Marathon 88 both fit close to true. The suede favorite Campus 2 rounds out this group: it runs closer to true than the Superstar but still skews a hair narrow, so wide-footed buyers should still consider going up.

How to Find Your adidas Originals Size

Start with the category. For the heritage court and shell-toe styles (Superstar, Forum, the high-tops), buy a half size up from your everyday sneaker size unless you have a genuinely narrow foot. For the runner-inspired and premium leather models that fit closer to true, your normal size is usually right.

Width is the other half of the story. adidas Originals classics are built on a narrow last, so the snug feeling owners report is often width as much as length. If you have a wide or high-volume foot, size up half a size even in the models that are otherwise true to length, and lean toward leather or canvas uppers that stretch a little over the first few wears. Narrow feet can usually take these models true to size and may even find the roomiest styles a touch loose.

To pin down your number, measure both feet in the evening when they are at their largest, stand with weight on the foot, and go by the longer foot. Compare that length to the size chart below rather than guessing from your size in another brand. Suede and nubuck uppers give a little with wear, while synthetic and leather builds hold their shape, so factor in whether a snug first fit will relax or stay put.

adidas Originals vs Other Brands

Against Nike lifestyle shoes, adidas Originals generally fits a little smaller and narrower. Where the Air Force 1 runs famously large, the Superstar and Campus run snug, so people moving from Nike classics to adidas Originals often need a half size more than they expect. Compared with adidas performance running shoes, the Originals court line is narrower and shorter in feel. Versus New Balance, which offers true width options and a roomier toe box, adidas Originals feels distinctly narrow, and wide-footed buyers who love New Balance for that reason should size up in adidas. Against Converse, the fit is closer: both the Chuck Taylor and the Superstar share a flat, low-volume profile, though adidas tends to run slightly truer to length. The honest summary is that adidas Originals sits on the snug, narrow end of the lifestyle market, closer to Vans and Converse than to the roomy fit of Nike's chunkier silhouettes or New Balance.

adidas Originals Size Chart (US / UK / EU)

adidas uses the same numeric scale for the listed US men and US women rows above, which is why a women's size reads one number higher than the men's at the same length. When a model is sold as unisex, go by the foot length and treat the men's column as the base scale.

How Feetlot Measures This

Feetlot fits a global offset model to more than 100,000 verified owner-reported shoe records. Each shoe earns a single number that captures how its fit drifts from the reference shoe, the Nike Air Force 1. A shoe that runs smaller than the reference gets a positive value, and one that runs larger gets a negative value. Aggregating those numbers across all of a brand's models reveals the brand's overall pattern and, just as important, which specific models break it. For adidas Originals that means a clear lean toward the small side, a moderate consistency level, and a short list of roomier exceptions. Sign in to Feetlot and add the shoes already in the closet to get a personal size recommendation in any adidas Originals model, calibrated to how each owned pair actually fits.