Watshoo Tools
Shoe size guide
Compare a size that fits you with another brand. Free, without an account.
Selected men’s and women’s sizes from ASICS, Mizuno, New Balance, Nike, PUMA and Saucony.
See brand comparisons & fit notes ↓How we compare & sources
We match the brands’ published CM/JPN size labels. This is a starting point, not a measured foot length or a confirmed fit. We don’t apply a fixed “size up/down” rule to an entire brand.
Only documented sizes are listed. Unisex and other brands need separate verification.
- ASICS · MenChecked
- PUMA · MenChecked
- Saucony · MenChecked
- Nike · MenChecked
- New Balance · MenChecked
- Mizuno · MenChecked
Running shoe sizes across brands
These two examples compare the same CM/JPN label within each column. They are chart estimates, not measured foot lengths or confirmed fits.
| Brand | Men · 28 cm | Women · 25 cm |
|---|---|---|
| ASICS | EU 44 | EU 39.5 |
| Mizuno | EU 43 | EU 39 |
| New Balance | EU 44 | EU 39 |
| Nike | EU 44 | EU 39 |
| PUMA | EU 43 | EU 39 |
| Saucony | EU 44 | EU 40 |
For example, ASICS men’s EU 44 and PUMA men’s EU 43 both carry a 28 cm label. At 25.5 cm, both brands use EU 40. The difference changes with the size.
Brand notes & fit
ASICS Chart comparison
ASICS men’s EU 44 and women’s EU 44 both show 28 cm, but EU 44.5 differs: 28.25 cm for men and 28.5 cm for women. Choose the actual shoe variant; a brand name alone is not enough.
Mizuno Chart comparison
Mizuno’s chart lists men’s and women’s US sizes against a shared EU/Japan row. Standard widths differ: D for men and B for women. The matching EU label does not mean the two variants have the same fit.
New Balance Chart comparison
The official Japanese guide gives explicit JPN-to-EU mappings for men and women. Only those documented points are used here. Width is a separate choice; matching the size label does not establish the right width.
Nike Chart comparison
Nike distinguishes the CM/JP label from measured foot length. Some smaller men’s sizes share one CM/JP label. If that leaves two possible target sizes, we do not pick one. Check the model’s own fit guidance.
PUMA Chart comparison
A lower EU label does not prove that every PUMA shoe fits larger. Compare your exact reference size. The public guide covers selected men’s and women’s points; the separate unisex chart is not included.
Saucony Chart comparison
The men’s and women’s tables differ. We leave out women’s EU 40.5 because its published JPN and CHN entries disagree. Missing or conflicting values produce no numerical hint.
HOKA Guidance only
HOKA lists a separate women’s chart for Clifton 10, Arahi 8 and Challenger 8, with updated sizing and specific UK advice. Its general guide uses measured foot length. We do not turn that into a CM/JPN brand comparison; use the chart for your exact model.
Brooks Guidance only
Brooks recommends leaving about a thumb’s width in front of the longest toe. The guide reviewed here does not supply the compatible CM/JPN points needed for this calculator, so we link to Brooks without inventing an EU offset.
Questions about sizing
Does “true to size” mean the same EU size everywhere?
No. It describes someone’s experience relative to their usual size. Brand labels, model shape, width and the shoe variant can all differ. A chart match is a useful first shortlist, not a guarantee.
Should I size up if a shoe feels snug?
First distinguish a close fit from a shoe that is too short or too narrow. In My Sizes, use Too small or Too big for a wrong size and record whether length or width is the issue. Snug and Roomy describe a fit preference.
What if there is no match?
Check the linked manufacturer guide for the exact model and variant. We leave the result empty when a size is missing or several sizes share the target label. Personal matching in My Sizes also needs relevant reported experiences.