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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

Size guide

Relief Seeker

17 products

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Women's OOcoozie Thermo Mule - Black

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Men's OOcoozie Thermo Mule - Black

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Men's OOmy Zen - Black

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Women's OOmy Zen - Chalk

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Men's OOmy Zen - Foliage (FINAL SALE)

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Men's Slip-On Shoe

Men's OOmy Zen - Chalk

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Men's OOcoozie Thermo Mule - Alpine Moss

Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo

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Men's Primaloft Slipper

Women's OOcoozie Thermo Mule - White

Black Thermo White Thermo

Thermo
Women's Primaloft Slipper

Men's OOcoozie Thermo Mule - Navy

Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo

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Men's Primaloft Slipper

Men's OOcoozie Thermo Mule - Explorer Orange (FINAL SALE)

Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo

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Men's Primaloft Slipper

Men's OOahh Sport Flex Sandal - Matte Black

Matte Black Slate Navy White USA Bauer Black Bauer White

OOahh
Men's Sport Flex Slide

Men's OOahh Slide Sandal - Black

Black Navy Slate Tactical Green Nomad Green Camo Night Camo Moonstone Ocean Blue

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Men's Slide

Women's OOahh Slide Sandal - Black

Black Nomad Navy Slate Tactical Green Black & Oasis Black & Lavender Green Camo Night Camo Bauer Slate Primrose Moonstone Ocean Blue

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Women's Slide

Women's OOahh Sport Flex Sandal - Matte Black

Matte Black Navy Slate White Stardust Black & Lavender USA Bauer White Bauer Black

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Women's Sport Flex Slide

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17 products

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Prev Black Chalk Chalk & Black Next Zen Women's Slip-On Shoe

Prev Black Chalk & Black Chalk Chalk & Foliage Chalk & Sunburst Next Zen Men's Slip-On Shoe

Prev Black Thermo White Thermo Next Thermo Women's Primaloft Slipper

Prev Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo Next Thermo Men's Primaloft Slipper

Prev Black Chalk & Black Chalk Chalk & Foliage Chalk & Sunburst Next Zen Men's Slip-On Shoe

Prev Black Chalk Chalk & Black Next Zen Women's Slip-On Shoe

Prev Black Chalk Chalk & Black Next Zen Women's Slip-On Shoe

Prev Black Chalk & Black Chalk Chalk & Foliage Chalk & Sunburst Next Zen Men's Slip-On Shoe

Prev Black Chalk & Black Chalk Chalk & Foliage Chalk & Sunburst Next Zen Men's Slip-On Shoe

Prev Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo Next Thermo Men's Primaloft Slipper

Prev Black Thermo White Thermo Next Thermo Women's Primaloft Slipper

Prev Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo Next Thermo Men's Primaloft Slipper

Prev Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo Next Thermo Men's Primaloft Slipper

Prev Matte Black Slate Navy White USA Bauer Black Bauer White Next OOahh Men's Sport Flex Slide

Prev Black Navy Slate Tactical Green Nomad Green Camo Night Camo Moonstone Ocean Blue Next OOahh Men's Slide

Prev Black Nomad Navy Slate Tactical Green Black & Oasis Black & Lavender Green Camo Night Camo Bauer Slate Primrose Moonstone Ocean Blue Next OOahh Women's Slide

Prev Matte Black Navy Slate White Stardust Black & Lavender USA Bauer White Bauer Black Next OOahh Women's Sport Flex Slide

Try Before You Buy

Black Chalk Chalk & Black

Zen
Women's Slip-On Shoe

Black Chalk & Black Chalk Chalk & Foliage Chalk & Sunburst

Zen
Men's Slip-On Shoe

Black Thermo White Thermo

Thermo
Women's Primaloft Slipper

Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo

Thermo
Men's Primaloft Slipper

Black Chalk & Black Chalk Chalk & Foliage Chalk & Sunburst

Zen
Men's Slip-On Shoe

Black Chalk Chalk & Black

Zen
Women's Slip-On Shoe

Black Chalk Chalk & Black

Zen
Women's Slip-On Shoe

Black Chalk & Black Chalk Chalk & Foliage Chalk & Sunburst

Zen
Men's Slip-On Shoe

Black Chalk & Black Chalk Chalk & Foliage Chalk & Sunburst

Zen
Men's Slip-On Shoe

Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo

Thermo
Men's Primaloft Slipper

Black Thermo White Thermo

Thermo
Women's Primaloft Slipper

Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo

Thermo
Men's Primaloft Slipper

Black Thermo Black & Alpine Moss Thermo White & Navy Thermo White & Explorer Orange Thermo

Thermo
Men's Primaloft Slipper

Matte Black Slate Navy White USA Bauer Black Bauer White

OOahh
Men's Sport Flex Slide

Black Navy Slate Tactical Green Nomad Green Camo Night Camo Moonstone Ocean Blue

OOahh
Men's Slide

Black Nomad Navy Slate Tactical Green Black & Oasis Black & Lavender Green Camo Night Camo Bauer Slate Primrose Moonstone Ocean Blue

OOahh
Women's Slide

Matte Black Navy Slate White Stardust Black & Lavender USA Bauer White Bauer Black

OOahh
Women's Sport Flex Slide