OOmega Collection

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

1 4

APMA Certified, HSA/
FSA eligible products.
Learn more

425,000+
5-Star Reviews

Feel the OO
30 Day Risk-Free
Returns

Size guide

OOmega Collection

11 products

Women's OOmega Posh Mule - Black

Black Truffle

Posh
Women's Platform Mule

Women's OOmega Posh Mule - Truffle

Black Truffle

Posh
Women's Platform Mule

Women's OOmega Leather Londoner - Truffle

Black & Charcoal Black White & Almond White & Spacedust Truffle

Londoner
Women's Premium Leather Boot

Women's OOmega Leather Londoner - Black

Black & Charcoal Black White & Almond White & Spacedust Truffle

Londoner
Women's Premium Leather Boot

Women's OOmega OOlala Stacked Sandal - Latte Fade

Black Nomad Latte Fade Stardust

OOlala
Women's Platform Sandal

Women's OOmega OOlala Sandal - Stardust

Black Nomad Latte Fade Stardust

OOlala
Women's Platform Sandal

Women's OOmega OOlala Sandal - Black

Black Nomad Latte Fade Stardust

OOlala
Women's Platform Sandal

Women's OOmega OOlala Sandal - Nomad

Black Nomad Latte Fade Stardust

OOlala
Women's Platform Sandal

Women's OOmega Londoner - Charcoal

Black & Charcoal Black White & Almond White & Spacedust Truffle

Londoner
Women's Wool-Blend Boot

Women's OOmega Londoner - Almond

Black & Charcoal Black White & Almond White & Spacedust Truffle

Londoner
Women's Wool-Blend Boot

Women's OOmega Londoner - Spacedust

Black & Charcoal Black White & Almond White & Spacedust Truffle

Londoner
Women's Wool-Blend Boot

Shop With HSA/FSA

Shop With HSA/FSA

Sneakers of the Season

Sneakers of the Season

Essentials PLUS

Essentials PLUS

The World's Most Comfortable Clog

The World's Most Comfortable Clog

About Us

Support

OOmega Collection

11 products

Filter and sort

Filter

Prev Black 1 ////// page \\\\\\ 1 Truffle 1 ////// page \\\\\\ 2 Next Posh Women's Platform Mule

Prev Black 1 ////// page \\\\\\ 1 Truffle 1 ////// page \\\\\\ 2 Next Posh Women's Platform Mule

Prev Black & Charcoal Black 1 ////// page \\\\\\ 1 White & Almond White & Spacedust Truffle 1 ////// page \\\\\\ 2 Next Londoner Women's Premium Leather Boot

Prev Black & Charcoal Black 1 ////// page \\\\\\ 1 White & Almond White & Spacedust Truffle 1 ////// page \\\\\\ 2 Next Londoner Women's Premium Leather Boot

Prev Black Nomad 1 ////// page \\\\\\ 1 Latte Fade Stardust 1 ////// page \\\\\\ 2 1 ////// page \\\\\\ 3 Next OOlala Women's Platform Sandal

Prev Black Nomad 1 ////// page \\\\\\ 1 Latte Fade Stardust 1 ////// page \\\\\\ 2 1 ////// page \\\\\\ 3 Next OOlala Women's Platform Sandal

Prev Black Nomad 1 ////// page \\\\\\ 1 Latte Fade Stardust 1 ////// page \\\\\\ 2 1 ////// page \\\\\\ 3 Next OOlala Women's Platform Sandal

Prev Black Nomad 1 ////// page \\\\\\ 1 Latte Fade Stardust 1 ////// page \\\\\\ 2 1 ////// page \\\\\\ 3 Next OOlala Women's Platform Sandal

Prev Black & Charcoal Black 1 ////// page \\\\\\ 1 White & Almond White & Spacedust Truffle 1 ////// page \\\\\\ 2 Next Londoner Women's Wool-Blend Boot

Prev Black & Charcoal Black 1 ////// page \\\\\\ 1 White & Almond White & Spacedust Truffle 1 ////// page \\\\\\ 2 Next Londoner Women's Wool-Blend Boot

Prev Black & Charcoal Black 1 ////// page \\\\\\ 1 White & Almond White & Spacedust Truffle 1 ////// page \\\\\\ 2 Next Londoner Women's Wool-Blend Boot

Try Before You Buy

Black Truffle

Posh
Women's Platform Mule

Black Truffle

Posh
Women's Platform Mule

Black & Charcoal Black White & Almond White & Spacedust Truffle

Londoner
Women's Premium Leather Boot

Black & Charcoal Black White & Almond White & Spacedust Truffle

Londoner
Women's Premium Leather Boot

Black Nomad Latte Fade Stardust

OOlala
Women's Platform Sandal

Black Nomad Latte Fade Stardust

OOlala
Women's Platform Sandal

Black Nomad Latte Fade Stardust

OOlala
Women's Platform Sandal

Black Nomad Latte Fade Stardust

OOlala
Women's Platform Sandal

Black & Charcoal Black White & Almond White & Spacedust Truffle

Londoner
Women's Wool-Blend Boot

Black & Charcoal Black White & Almond White & Spacedust Truffle

Londoner
Women's Wool-Blend Boot

Black & Charcoal Black White & Almond White & Spacedust Truffle

Londoner
Women's Wool-Blend Boot