All Men's

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 OOmy, OOmega, OOmg, OOcoozie, OOlala and OOyea styles Use for OOmy, OOmg and OOcoozie styles Use for OOahh, OOriginal, and OOcloog styles. 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
21.8 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
22.2 8.75	Women’s US size: 5.5	Women’s UK size: 3.5	Women’s EU size: 36.5
22.6 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
23.0 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
23.4 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: 4.5 Unisex UK size: M4/W5	Women’s EU size: 38 Men’s EU size: 38.5 Unisex EU size: 38
23.9 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
24.3 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: 5.5 Unisex UK size: M5/W6	Women’s EU size: 39 Men’s EU size: 39.5 Unisex EU size: 39
24.7 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
25.1 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: 6.5 Unisex UK size: M6/W7	Women’s EU size: 40 Men’s EU size: 40.5 Unisex EU size: 40
25.6 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
26.0 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
26.4 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
26.8 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
27.2 10.75	Women’s US size: 11.5 Men’s US size: 10	Women’s UK size: 9.5 Men’s UK size: 9	Women’s EU size: 42.5 Men’s EU size: 43
27.7 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
28.1 11.125	Men’s US size: 11	Men’s UK size: 10	Men’s EU size: 44
28.5 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
28.9 11.375	Men’s US size: 12	Men’s UK size: 11	Men’s EU size: 45
29.4 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
29.8 11.75	Men’s US size: 13	Men’s UK size: 12	Men’s EU size: 46
30.2 11.875	Men’s US size: 13.5 Unisex US size: M13/W15	Men’s UK size: 12.5 Unisex UK size: M12/W13	Men’s EU size: 46.5 Unisex EU size: 46
30.6 12	Men’s US size: 14	Men’s UK size: 13	Men’s EU size: 47
31.1 12.125	Men’s US size: 14.5 Unisex US size: M14/W16	Men’s UK size: 13.5 Unisex UK size: M13/W14	Men’s EU size: 47.5 Unisex EU size: 47
31.5 12.375	Men’s US size: 15	Men’s UK size: 14	Men’s EU size: 48
31.9 12.5	Unisex US size: M15/W17	Unisex UK size: M14/W15	Unisex EU size: 48
32.8 12.875	Unisex US size: M16/W18	Unisex UK size: M15/W16	Unisex EU size: 49

Foot Length	21.8 8.675	22.2 8.75	22.6 8.875	23.0 9.125	23.4 9.25	23.9 9.375	24.3 9.625	24.7 9.75	25.1 9.875	25.6 10.125	26.0 10.25	26.4 10.375	26.8 10.5	27.2 10.75	27.7 10.875	28.1 11.125	28.5 11.25	28.9 11.375	29.4 11.675	29.8 11.75	30.2 11.875	30.6 12	31.1 12.125	31.5 12.375	31.9 12.5	32.8 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: 3.5	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: 4.5 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: 5.5 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: 6.5 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: 9.5 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: 12.5 Unisex UK size: M12/W13	Men’s UK size: 13	Men’s UK size: 13.5 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: 36.5	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: 38.5 Unisex EU size: 38	Women’s EU size: 38.5 Men’s EU size: 39	Women’s EU size: 39 Men’s EU size: 39.5 Unisex EU size: 39	Women’s EU size: 39.5 Men’s EU size: 40	Women’s EU size: 40 Men’s EU size: 40.5 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: 42.5 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: 46.5 Unisex EU size: 46	Men’s EU size: 47	Men’s EU size: 47.5 Unisex EU size: 47	Men’s EU size: 48	Unisex EU size: 48	Unisex EU size: 49

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Black

Roam Ripstop
Men's Lace-Up Shoe

Black/Graphite Tactical Green

OOriginal
Men's Sport Jandal

Black Chalk Driftwood

OOahh PLUS
Men's Slide

Black Chalk Driftwood

OOahh PLUS
Men's Slide

Black Navy Nomad Moonstone Neptune Blue Foliage Cosmic Grey Ocean Blue

OOriginal
Men's Jandal

Black/Graphite Tactical Green

OOriginal
Men's Sport Jandal

Chalk/Black

Zen
Men's Slip-On Shoe

Black Chalk Driftwood

OOahh PLUS
Men's Slide

Black Nomad

OOahh
Men's Slide

Black Nomad

OOahh
Men's Slide

Black/White

Stride
Men's Lace-Up Shoe

Black Chalk

Cloog PLUS
Men's Clog

Matte Black

OOahh Sport Flex
Men's Slide

Black Matrix

OOahh
Men's Sport Slide

Black Chalk

Cloog PLUS
Men's Clog

Black

OOcloog
Men's Clog

Black Navy Nomad Moonstone Neptune Blue Foliage Cosmic Grey Ocean Blue

OOriginal
Men's Jandal

Black Navy Nomad Moonstone Neptune Blue Foliage Cosmic Grey Ocean Blue

OOriginal
Men's Jandal

Black Navy Nomad Moonstone Neptune Blue Foliage Cosmic Grey Ocean Blue

OOriginal
Men's Jandal

Black Navy Nomad Moonstone Neptune Blue Foliage Cosmic Grey Ocean Blue

OOriginal
Men's Jandal

Black/White

Sport
Men's Slip-On Shoe

Black Navy Nomad Moonstone Neptune Blue Foliage Cosmic Grey Ocean Blue

OOriginal
Men's Jandal

Black Navy Nomad Moonstone Neptune Blue Foliage Cosmic Grey Ocean Blue

OOriginal
Men's Jandal

Black Navy Nomad Moonstone Neptune Blue Foliage Cosmic Grey Ocean Blue

OOriginal
Men's Jandal