The question "How does ASICS fit compared to Nike?" is increasingly asked by sneaker enthusiasts and runners alike. Not surprising, since the fit of a shoe directly determines your comfort. Whether you go for a GEL-Kayano or an Air Max, the difference between ASICS and Nike in size and fit is greater than you think. In this blog, we explain it precisely so you never have to doubt your size again.
ASICS fits smaller than Nike: here’s the real deal
Generally speaking: ASICS fits smaller and narrower than Nike. Especially in models like the ASICS GEL-Kayano or GEL-NYC, the fit is a bit tighter around the heel and midfoot. This is because ASICS often focuses on stability, running, and performance. Nike, on the other hand, usually fits roomier, with more space at the toes, offering more comfort for casual use.
If you normally wear a Nike size 42, you will usually fit better in ASICS size 42.5 or even 43, depending on your foot width.
Why ASICS often fits tighter
ASICS is designed from a sports-technical perspective. The shoes are built for support, precision, and cushioning, not for a wide or oversized fit. Many models have a relatively narrow last (the shape of the shoe), which means people with wider feet may experience pressure points more quickly. Nike, on the other hand, often focuses on lifestyle sneakers, where the last is wider and there is more room in the forefoot.
Which ASICS size should you choose? Our recommendation
To be sure of the right fit with ASICS, we advise always choosing a half to a full size larger than your Nike size. This especially applies to technical models such as the GEL-Kayano, Nimbus, or GEL-1130, which are designed for stability and performance.
If you are unsure between two sizes, choose the larger option. ASICS fits smaller in almost all cases, especially with a narrow last or if you have wider feet. If you wear insoles or need extra space, a full size larger is often necessary for optimal comfort.
Usage also plays a role: if you wear the sneakers casually, a half size larger may be sufficient. If you use them for intensive use or running, go for a full size larger to prevent friction or pressure points.
ASICS vs. Nike: how popular models differ
Not every model fits the same, so it’s good to know specific differences between ASICS and Nike:
ASICS GEL-Kayano vs. Nike Air Max 1
The GEL-Kayano has a narrow fit, especially around the heel and midfoot. The Air Max 1 fits somewhat roomier. Take at least a half size larger for the Kayano.
ASICS GEL-NYC vs. Nike Dunk Low
Where the Dunk has a looser fit, the GEL-NYC is more compactly built with firm support. Choose a half to a full size larger here.
ASICS GEL-1130 vs. Nike Air Force 1
The Air Force 1 is known for its roomy fit. The GEL-1130 is tight in the forefoot. A full size larger is therefore strongly recommended for the 1130.
Why you should never just pick your standard size
A wrong size is not only annoying while wearing but can also cause physical complaints, especially with intensive use. And visually? A shoe that is too small or too tight ruins your outfit, no matter how beautiful the model is.
A common misconception is that sneakers fit universally. But ASICS and Nike each follow their own size charts and fit standards. For example, a size 44 in ASICS is noticeably smaller in practice than a size 44 in Nike. That’s why it’s crucial to compare carefully per brand and model.
Why it’s important to compare carefully
A wrongly chosen size is not only uncomfortable but can also lead to complaints or injuries, especially if you use the sneaker for running or walking. Besides, you want the shoe to look good and fit your style and foot shape.
A common mistake is thinking all sneakers fit standard. That is definitely not the case. ASICS follows a completely different size chart than Nike, and you can see this in practice: an ASICS 44 is truly smaller than a Nike 44.
How to choose your perfect ASICS size
Still unsure? Remember this: ASICS generally fits smaller and narrower than Nike. So always order a half to a full size larger. Especially if you switch from a lifestyle sneaker (like a Nike Dunk) to a performance model like the GEL-Kayano, this difference is noticeable.
Want to be sure you get the right fit? Then check out the complete ASICS collection at Snrkickz, including fit advice per model