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Size guide

How to find your size?

The best way to ensure your OOFOS fit perfectly is to measure the length of your feet and use the chart above to determine your size. To get your foot length, trace your foot on a piece of paper and measure from the heel to the tip of the longest toe. If your measurement falls between numbers on the chart, simply round up.

Can’t measure your feet?

OOFOS runs true to size with most other footwear brands. If you are a whole size in another brand, order that same whole size in OOFOS.

Use for Women’s Shoes, Slippers and Boots. Use for Men’s Shoes and Slippers. Use for Slides, Sandals, Clogs. If you are a half size in another brand, we recommend that Women order a size up, and Men order a size down.

Foot Length	US	UK	EU
218 8.675	Women’s US size: 5 Unisex US size: M3/W5	Women’s UK size: 3 Unisex UK size: M2/W3	Women’s EU size: 36 Unisex EU size: 36
222 8.75	Women’s US size: 5.5	Women’s UK size:	Women’s EU size:
226 8.875	Women’s US size: 6 Unisex US size: M4/W6	Women’s UK size: 4 Unisex UK size: M3/W4	Women’s EU size: 37 Unisex EU size: 37
230 9.125	Women’s US size: 6.5 Men’s US size: 5	Women’s UK size: 4.5 Men’s UK size: 4	Women’s EU size: 37.5 Men’s EU size: 38
234 9.25	Women’s US size: 7 Men’s US size: 5.5 Unisex US size: M5/W7	Women’s UK size: 5 Men’s UK size: Unisex UK size: M4/W5	Women’s EU size: 38 Men’s EU size: Unisex EU size: 38
239 9.375	Women’s US size: 7.5 Men’s US size: 6	Women’s UK size: 5.5 Men’s UK size: 5	Women’s EU size: 38.5 Men’s EU size: 39
243 9.625	Women’s US size: 8 Men’s US size: 6.5 Unisex US size: M6/W8	Women’s UK size: 6 Men’s UK size: Unisex UK size: M5/W6	Women’s EU size: 39 Men’s EU size: Unisex EU size: 39
247 9.75	Women’s US size: 8.5 Men’s US size: 7	Women’s UK size: 6.5 Men’s UK size: 6	Women’s EU size: 39.5 Men’s EU size: 40
251 9.875	Women’s US size: 9 Men’s US size: 7.5 Unisex US size: M7/W9	Women’s UK size: 7 Men’s UK size: Unisex UK size: M6/W7	Women’s EU size: 40 Men’s EU size: Unisex EU size: 40
256 10.125	Women’s US size: 9.5 Men’s US size: 8	Women’s UK size: 7.5 Men’s UK size: 7	Women’s EU size: 40.5 Men’s EU size: 41
260 10.25	Women’s US size: 10 Men’s US size: 8.5 Unisex US size: M8/W10	Women’s UK size: 8 Men’s UK size: 7.5 Unisex UK size: M7/W8	Women’s EU size: 41 Men’s EU size: 41.5 Unisex EU size: 41
264 10.375	Women’s US size: 10.5 Men’s US size: 9	Women’s UK size: 8.5 Men’s UK size: 8	Women’s EU size: 41.5 Men’s EU size: 42
268 10.5	Women’s US size: 11 Men’s US size: 9.5 Unisex US size: M9/W11	Women’s UK size: 9 Men’s UK size: 8.5 Unisex UK size: M8/W9	Women’s EU size: 42 Men’s EU size: 42.5 Unisex EU size: 42
272 10.75	Women’s US size: 11.5 Men’s US size: 10	Women’s UK size: Men’s UK size: 9	Women’s EU size: Men’s EU size: 43
277 10.875	Women’s US size: 12 Men’s US size: 10.5 Unisex US size: M10/W12	Women’s UK size: 10 Men’s UK size: 9.5 Unisex UK size: M9/W10	Women’s EU size: 43 Men’s EU size: 43.5 Unisex EU size: 43
281 11.125	Men’s US size: 11	Men’s UK size: 10	Men’s EU size: 44
285 11.25	Men’s US size: 11.5 Unisex US size: M11/W13	Men’s UK size: 10.5 Unisex UK size: M10/W11	Men’s EU size: 44.5 Unisex EU size: 44
289 11.375	Men’s US size: 12	Men’s UK size: 11	Men’s EU size: 45
294 11.675	Men’s US size: 12.5 Unisex US size: M12/W14	Men’s UK size: 11.5 Unisex UK size: M11/W12	Men’s EU size: 45.5 Unisex EU size: 45
298 11.75	Men’s US size: 13	Men’s UK size: 12	Men’s EU size: 46
302 11.875	Men’s US size: 13.5 Unisex US size: M13/W15	Men’s UK size: Unisex UK size: M12/W13	Men’s EU size: Unisex EU size: 46
306 12	Men’s US size: 14	Men’s UK size: 13	Men’s EU size: 47
311 12.125	Men’s US size: 14.5 Unisex US size: M14/W16	Men’s UK size: Unisex UK size: M13/W14	Men’s EU size: Unisex EU size: 47
315 12.375	Men’s US size: 15	Men’s UK size: 14	Men’s EU size: 48
319 12.5	Unisex US size: M15/W17	Unisex UK size: M14/W15	Unisex EU size: 48
328 12.875	Unisex US size: M16/W18	Unisex UK size: M15/W16	Unisex EU size: 49

Foot Length	218 8.675	222 8.75	226 8.875	230 9.125	234 9.25	239 9.375	243 9.625	247 9.75	251 9.875	256 10.125	260 10.25	264 10.375	268 10.5	272 10.75	277 10.875	281 11.125	285 11.25	289 11.375	294 11.675	298 11.75	302 11.875	306 12	311 12.125	315 12.375	319 12.5	328 12.875
US Women	Women’s US size: 5 Unisex US size: M3/W5	Women’s US size: 5.5	Women’s US size: 6 Unisex US size: M4/W6	Women’s US size: 6.5 Men’s US size: 5	Women’s US size: 7 Men’s US size: 5.5 Unisex US size: M5/W7	Women’s US size: 7.5 Men’s US size: 6	Women’s US size: 8 Men’s US size: 6.5 Unisex US size: M6/W8	Women’s US size: 8.5 Men’s US size: 7	Women’s US size: 9 Men’s US size: 7.5 Unisex US size: M7/W9	Women’s US size: 9.5 Men’s US size: 8	Women’s US size: 10 Men’s US size: 8.5 Unisex US size: M8/W10	Women’s US size: 10.5 Men’s US size: 9	Women’s US size: 11 Men’s US size: 9.5 Unisex US size: M9/W11	Women’s US size: 11.5 Men’s US size: 10	Women’s US size: 12 Men’s US size: 10.5 Unisex US size: M10/W12	Men’s US size: 11	Men’s US size: 11.5 Unisex US size: M11/W13	Men’s US size: 12	Men’s US size: 12.5 Unisex US size: M12/W14	Men’s US size: 13	Men’s US size: 13.5 Unisex US size: M13/W15	Men’s US size: 14	Men’s US size: 14.5 Unisex US size: M14/W16	Men’s US size: 15	Unisex US size: M15/W17	Unisex US size: M16/W18
UK Women	Women’s UK size: 3 Unisex UK size: M2/W3	Women’s UK size:	Women’s UK size: 4 Unisex UK size: M3/W4	Women’s UK size: 4.5 Men’s UK size: 4	Women’s UK size: 5 Men’s UK size: Unisex UK size: M4/W5	Women’s UK size: 5.5 Men’s UK size: 5	Women’s UK size: 6 Men’s UK size: Unisex UK size: M5/W6	Women’s UK size: 6.5 Men’s UK size: 6	Women’s UK size: 7 Men’s UK size: Unisex UK size: M6/W7	Women’s UK size: 7.5 Men’s UK size: 7	Women’s UK size: 8 Men’s UK size: 7.5 Unisex UK size: M7/W8	Women’s UK size: 8.5 Men’s UK size: 8	Women’s UK size: 9 Men’s UK size: 8.5 Unisex UK size: M8/W9	Women’s UK size: Men’s UK size: 9	Women’s UK size: 10 Men’s UK size: 9.5 Unisex UK size: M9/W10	Men’s UK size: 10	Men’s UK size: 10.5 Unisex UK size: M10/W11	Men’s UK size: 11	Men’s UK size: 11.5 Unisex UK size: M11/W12	Men’s UK size: 12	Men’s UK size: Unisex UK size: M12/W13	Men’s UK size: 13	Men’s UK size: Unisex UK size: M13/W14	Men’s UK size: 14	Unisex UK size: M14/W15	Unisex UK size: M15/W16
EU Women	Women’s EU size: 36 Unisex EU size: 36	Women’s EU size:	Women’s EU size: 37 Unisex EU size: 37	Women’s EU size: 37.5 Men’s EU size: 38	Women’s EU size: 38 Men’s EU size: Unisex EU size: 38	Women’s EU size: 38.5 Men’s EU size: 39	Women’s EU size: 39 Men’s EU size: Unisex EU size: 39	Women’s EU size: 39.5 Men’s EU size: 40	Women’s EU size: 40 Men’s EU size: Unisex EU size: 40	Women’s EU size: 40.5 Men’s EU size: 41	Women’s EU size: 41 Men’s EU size: 41.5 Unisex EU size: 41	Women’s EU size: 41.5 Men’s EU size: 42	Women’s EU size: 42 Men’s EU size: 42.5 Unisex EU size: 42	Women’s EU size: Men’s EU size: 43	Women’s EU size: 43 Men’s EU size: 43.5 Unisex EU size: 43	Men’s EU size: 44	Men’s EU size: 44.5 Unisex EU size: 44	Men’s EU size: 45	Men’s EU size: 45.5 Unisex EU size: 45	Men’s EU size: 46	Men’s EU size: Unisex EU size: 46	Men’s EU size: 47	Men’s EU size: Unisex EU size: 47	Men’s EU size: 48	Unisex EU size: 48	Unisex EU size: 49