Sneaker to Western Boot Size Converter

Every western boot brand uses a different last. A size 10 in Ariat fits nothing like a 10 in Boulet.

And your sneaker size? That's a whole different measuring system — Nike alone runs a full size larger than most boot brands.

The standard advice is "use a Brannock device." Great. Nobody owns one.

You know your sneaker size because you've bought sneakers your whole life. So that's what we'll work with.

Why Sneaker Sizes Don't Match Boot Sizes

Athletic shoe companies add extra room. Nike is the worst offender — they pad their sizing by roughly a full size. If you wear a Nike 10, your foot is probably a true 9 or 9.5 on a Brannock device.

Western boots are built to fit snug. The leather molds to your foot over time.

A boot that feels slightly tight at the instep on day one will feel perfect by week three. A boot that feels comfortable on day one will feel sloppy by month two.

Brand-by-Brand Sizing Tendencies

Ariat

Runs true to Brannock size, which means about half a size down from Nike. Their ATS and 4LR technology footbeds add some volume, so the boot feels roomier than a traditional western boot. Ariat's round-toe models give the most generous fit.

If you're between sizes, the half size down usually works. Ariat is the most forgiving brand for online ordering.

Boulet

Runs small. Most people go a full size down from sneakers, sometimes 1.5 sizes. Boulet uses European-influenced lasts that fit narrower through the instep than American brands.

Their wide widths (3E, 4E) are true wides, though — if you need width, Boulet's wides are genuinely spacious. Boulet is the brand most likely to require an exchange on first order. See our full Boulet review.

Justin

True to Brannock size. Solid, predictable fit across their range. Justin's J-Flex system in their newer boots adds comfort without changing the sizing.

Half size down from Nike, full size down from Adidas running shoes. Justin is the safest blind buy for most people.

Lucchese

Wildly inconsistent between lines. Their Classics line runs true to Brannock. The 1883 line can run anywhere from true-to-size to a half size large.

Their exotic boots tend to fit tighter because exotic skins don't stretch like cowhide. If you're buying Lucchese online, order from somewhere with free returns. You might need two tries.

Tecovas

Their own sizing chart is decent, but the fit runs narrow. If you have anything wider than a D-width foot, Tecovas will pinch.

They don't ship directly to Canada, which makes returns even more painful. Consider cross-border options if you're set on them, but honestly — Boulet gives you comparable quality from a Canadian factory with actual Canadian support.

Tony Lama

Runs true to slightly large. Half size down from sneakers is usually right.

Tony Lama's square-toe models fit wider than their pointed-toe models by a noticeable margin. Good brand for people with average-width feet who want predictable sizing.

Dan Post

True to size on Brannock. Dan Post boots tend to have a higher instep than most brands, which makes them comfortable for people with high arches but loose-feeling for flat-footed buyers. Half size down from Nike works for most people.

Width Matters as Much as Length

Boot widths go: B (narrow) → D (standard men's) → E → EE → EEE (extra wide). Each width letter adds about 3mm (⅛ inch) across the ball of the foot.

If you've ever felt like shoes are tight across the widest part of your foot but fine length-wise, you need a wider width, not a longer boot. Going up a full size to compensate for width is one of the most common mistakes — you end up with a boot that's too long, slides at the heel, and still pinches at the ball.

For wide feet, check our wide-feet boot guide. Ariat, Boulet (3E/4E widths), and Justin all make genuine wide options that are available in Canada.

Toe Shape Affects Perceived Fit

A square-toe boot in the same size as a snip-toe boot will feel roomier in the toe box. Your toes don't actually go into the point of a snip toe — the boot extends past your toes — but the forefoot tapers, which creates pressure on the sides of your foot.

If you're borderline on sizing, a square or round toe is more forgiving. Snip toes punish half-size errors. Read the full toe shape and heel guide for details.

Size Conversion Reference Table

Sizes are approximate starting points based on community feedback from r/cowboyboots, r/Boots, and r/goodyearwelt. Individual foot shape, arch height, and instep volume affect fit. Adidas running shoes: subtract an additional 0.5 from Nike equivalents.

Converse: use Nike size directly (Converse already runs small). New Balance: same offset as Nike for most models.

What If You're Between Sizes?

Go with the smaller size. Western boots stretch with wear — leather molds to your foot over the first few weeks.

A boot that's slightly too snug will break in. A boot that's slightly too loose will never tighten up, and you'll fight heel slip forever.

The exception: if you have wide feet and you're between sizes, go up and add an insole. Or better yet, order the correct length in a wide width. See our buying guide for more on fit details.

Measure Your Foot at Home

If you want a more precise starting point than sneaker conversion, measure your foot. You don't need a Brannock device — a piece of paper, a pen, and a ruler work fine.

This measurement gives you your true foot size (equivalent to a Brannock reading). From there, use the brand-specific notes above — Boulet runs small from this measurement, Ariat runs true, and so on.