Free tools
Tools & calculators
Practical helpers that save you money and pain — no sign-up, nothing to download.
Cost-per-mile calculator
Roughly what a shoe costs you per mile and per year, given its price and how long its category typically lasts. A useful way to compare "cheap" vs "expensive" shoes over their real life.
Cost per mile
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Cost per 10,000 steps
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Estimated annual cost
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Assumes ~2,000 steps per mile. Estimates only — real durability depends on your weight, gait and surfaces. When a midsole loses its bounce or the outsole wears smooth, it is time to retire the shoe regardless of mileage.
Foot-width finder
Width is the most common reason a shoe doesn't fit. Measure at the end of the day (feet swell) with your usual socks on.
- 1
Trace
Stand on paper, trace both feet. Measure the widest part (across the ball) in millimetres.
- 2
Check the gap
In the shoe, you want about a thumb's width (8–10 mm) between your longest toe and the end.
- 3
Interpret
If your midfoot spills over the sole edge or your toes feel pinched, go up a width (or try a foot-shaped toe box).
Full guidance, including women's/men's width letters (B, D, 2E, 4E) and size conversions, is in the fit, sizing & width guide.