Should I always size up when between sizes?

No. Models that already run big often need the smaller half; narrow lasts may need width or a half up. Use the model’s offset and width note, not a universal rule.

What if the brand has no half sizes?

Choose the closer whole size based on the model’s length offset, then fix volume with lacing, insoles, or a different silhouette — or pick a brand that sells halves.

How do I convert from a shoe that already fits?

Use the model converter: pick the shoe that fits, enter that size, and read the destination model’s advice and width note.

Between sizes & half-size shoe cheat sheet

Being between sizes is one of the highest-intent sizing questions — and generic “always size up” advice fails across lasts. Half sizes help when the brand offers them; when they don’t (or when width is the real issue), the right move depends on the model’s runs_small_by offset and width note.

How to decide

Length offset first — if a model runs half small or half big, start there.
Width next — do not size up purely for width if a wide SKU exists.
Socks & orthotics — thicker volume can push you toward the larger half; see thick socks & orthotics.
Break-in boots — leather packs out; do not buy long hoping it “shrinks.” See boot break-in sizing.

Models with a non-zero length offset (or half-size advice)

Model	Verdict	Width	Advice
Yeezy Slides	Runs Small Partial	Narrow midfoot band; foam molds after break-in	Size up one full size (whole sizes only; between sizes always round up)
Adidas Superstar	Runs Big Partial	Shell toe adds dead length; forefoot can still feel snug	Size down half a size if narrow/average; TTS if wide
Clarks Wallabee	Runs Big Partial	Wide moccasin last; suede stretches	Size down half a size
Converse Chuck 70 High	Runs Big Verified	More structured than All Star; tapered toebox	Size down half a size
Converse Chuck Taylor All Star High	Runs Big Verified	Flat canvas last; wide options available	Size down half a size
Doc Martens 1460 8-Eye Boot	Runs Big Verified	Roomy toe box; wide feet may stay closer to usual size	Size down half to full from sneakers
Doc Martens 1461 3-Eye Shoe	Runs Big Partial	Same last family as 1460 — roomy toe	Size down half a size
Doc Martens Jadon Boot	Runs Big Partial	Chunky platform; often snugger than 1460 at first	Size down half a size if between or from sneakers
Keen Newport H2	Runs Small Partial	Iconic roomy toe bumper — wide volume, length can feel short	True to size if toes clear bumper; half up if between sizes or toes near rubber
New Balance 990v6	Runs Big Partial	Multiple widths (D/2E/4E) — use them	Consider half size down; or TTS with correct width
Nike Air Force 1 '07	Runs Big Verified	Roomy boxy toebox	Size down half a size (TTS if wide feet)
Nike Cortez	Runs Small Partial	Heritage narrow last; toe box is snug and does not stretch much	Size up half a size — especially if average-to-wide feet
On Cloud 5	Runs Small Partial	Narrower/streamlined vs Cloudmonster; elastic speed-lace is snug	Runs small and narrow — most size up half; wide feet especially
Red Wing Classic Moc 1907	Runs Big Verified	23 last — roomy moc toe; width options matter	Size down half from Brannock/sneakers
Red Wing Iron Ranger 8085	Runs Big Verified	Voluminous 8-last bump toe; EE widths available	Size down half from Brannock/sneakers (full if narrow)
Salomon Speedcross 6	Runs Small Partial	Narrow aggressive trail fit; wide SKUs exist	Size up half a size
Salomon XT-6	Runs Small Partial	Precision SensiFit — narrow midfoot	Size up half a size for lifestyle comfort
Skechers D'Lites	Runs Big Draft	Chunky roomy silhouette	Consider half size down
Sorel Caribou	Runs Big Verified	Roomy pac-boot volume; felt liner packs out further	Size down half to a full size (stay closer to TTS only with very thick winter socks)
Thursday Boot Co. Captain	Runs Big Verified	D standard; Wide EE/EEE available on many leathers — better than sizing up long	Size down half a size from sneakers (men); prefer EE/EEE over length-up if wide
Timberland 6-Inch Premium Boot	Runs Big Verified	Roomy work-boot last	Size down half a size (TTS if wide/thick socks)
Veja V-10	Runs Big Partial	Roomy toe box; narrow feet most likely to need the smaller size	Size down if between sizes — V-10 often feels roomy
Yeezy Boost 350 V2	Runs Small Verified	Tapered Primeknit toebox — limited stretch vs leather	Size up half a size (full size if wide feet)
Adidas Campus 00s	True to Size Partial	Padded chunky silhouette; suede needs break-in	True to size — take your normal size; wide feet between sizes can go up half
Adidas Gazelle	Runs Narrow Partial	Narrow non-stretch suede — snugger than Stan Smith/Superstar	True to size in length but runs narrow — wide feet go up half
Adidas Handball Spezial	True to Size Partial	Roomier than Samba among terrace trio; pliable suede stretches	True to size; half up if wide feet
Adidas Samba OG	Runs Narrow Verified	Narrow low-volume last — common complaint	True to size length; half up if wide feet
Adidas Stan Smith	True to Size Partial	Medium-narrow tennis last — snugger than Superstar forefoot	True to size; half up if wide
Adidas Ultraboost 1.0	True to Size Partial	Primeknit stretches; TPU midfoot cage can feel tight	True to size; half up if wide or thick socks
Blundstone Classic 500	True to Size Verified	Classic series slightly wider than Originals; half sizes add width not length	True to size (AU/UK stamp); half up for width
Blundstone Original 510	True to Size Partial	Originals firmer across top/toe than Classics	True to size; half up if you need width
Clarks Desert Boot	True to Size Partial	Standard crepe-sole chukka last	True to size; half down only if between

Convert from a shoe you own · Foot length (cm) → size

Between sizes & half-size cheat sheet

How to decide

Models with a non-zero length offset (or half-size advice)

FAQ