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Altra Size Charts

Find your perfect fit with the official Altra size charts

Use these size charts to find the right size for your next pair of Altra shoes. All measurements are in millimeters (mm).

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Altra - Female

Unsure about your size? Find your size or check out our detailed guide on how to measure your feet.

Fit Type: True to size

Foot Length (mm) EU US Mondopoint UK Japan (cm) China (mm) Korea (mm)
220 36 5.5 220 3.5 22 220 220
225 37 6 225 4 22.5 225 225
230 37.5 6.5 230 4.5 23 230 230
235 38 7 235 5 23.5 235 235
240 38.5 7.5 240 5.5 24 240 240
245 39 8 245 6 24.5 245 245
250 40 8.5 250 6.5 25 250 250
255 40.5 9 255 7 25.5 255 255
260 41 9.5 260 7.5 26 260 260
265 42 10 265 8 26.5 265 265
270 42.5 10.5 270 8.5 27 270 270
275 43 11 275 9 27.5 275 275
280 44 11.5 280 9.5 28 280 280
285 44.5 12 285 10 28.5 285 285

Based On: Altra - Female

Last updated: 2025-07-17 11:28:48

Altra - Male

Unsure about your size? Find your size or check out our detailed guide on how to measure your feet.

Fit Type: True to size

Foot Length (mm) EU US Mondopoint UK Japan (cm) China (mm) Korea (mm)
250 40 7 250 6 25 250 250
255 40.5 7.5 255 6.5 25.5 255 255
260 41 8 260 7 26 260 260
265 42 8.5 265 7.5 26.5 265 265
270 42.5 9 270 8 27 270 270
275 43 9.5 275 8.5 27.5 275 275
280 44 10 280 9 28 280 280
285 44.5 10.5 285 9.5 28.5 285 285
290 45 11 290 10 29 290 290
295 46 11.5 295 10.5 29.5 295 295
300 46.5 12 300 11 30 300 300
305 47 12.5 305 11.5 30.5 305 305
310 48 13 310 12 31 310 310
320 49 14 320 13 32 320 320
330 50 15 330 14 33 330 330
340 51.5 16 340 15 34 340 340

Based On: Altra - Male

Last updated: 2025-07-17 11:28:48