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Ugg Size and Fit guide

Brand & fit at a glance

Size system
UK, EU and foot cm
Fit
True to size, snug at the heel
Origin
USA
Best for
Sheepskin boots and slippers
Children’s Women’s Men’s

About UGG: UGG say their boots and slippers run true to size, and that the footwear does not tend to run big. A good fit is snug through the heel and midfoot, with room to move the toes. Women, men and children each have their own chart, and the same UK number is not the same EU size on every one. The tables below are those charts. Sizes on our site come and go with stock.

UGG fit & sizing tips

  • Measure the longer foot and use the chart for that range, not a chart from a different one.
  • Women’s UK 5 is EU 38 and 24 cm. Men’s UK 5 is EU 39 and also 24 cm. The UK size and the centimetres agree. The EU number does not.
  • Boots and slippers: take your usual size. If you are between sizes, measure and use the chart rather than rounding by habit.
  • Shoes are made true to size too, though UGG say going up or down can suit some people better than it does in a boot.
  • Wide feet and high insteps. If the forefoot or the instep feels under pressure, their fit guide says go up one size.

UGG Children’s Boots

This is UGG’s own children’s chart, joining the toddler and kids rows where the UK size, EU size and centimetres agree. Use this chart rather than a women’s or men’s one. Sizes on our site come and go with stock.

Ugg children’s shoes size conversion
UK EU US Foot cm
3.5 19.5 4T 11.9
4.5 21 5T 12.7
5 22 6T 13.5
6 23.5 7T 14.4
7 25 8T 15.2
8 26 9T 16.2
9 27.5 10T 17
10 28.5 11T 17.9
11 30 12T 18.7
12 31 13 19.5
13 32.5 1 20.4
1 33.5 2 21.2
2 35 3 22
3 36 4 22.4
4 37 5 23.2
5 38 6 24.1

Source: ugg.com size guide

UGG Women’s Boots

This is UGG’s own women’s chart. They say boots and slippers run true to size, and that the footwear does not tend to run big. Sizes on our site come and go with stock.

Ugg women’s shoes size conversion
UK EU US Foot cm
3 36 5 22
3.5 36.5 5.5 22.5
4 37 6 23
4.5 37.5 6.5 23.5
5 38 7 24
5.5 38.5 7.5 24.5
6 39 8 25
6.5 39.5 8.5 25.5
7 40 9 26
7.5 40.5 9.5 26.5
8 41 10 27
8.5 41.5 10.5 27.5
9 42 11 28
9.5 42.5 11.5 28.5
10 43 12 29
11 44 13 30
12 45 14 31
13 48 15 32

Source: ugg.com size guide

UGG Men’s Boots

This is UGG’s own men’s chart. The same UK number is not the same EU size as on the women’s chart, even where the centimetres agree, and they say the boots run true to size. Sizes on our site come and go with stock.

Ugg men’s shoes size conversion
UK EU US Foot cm
2 36 3 21
3 37 4 22
3.5 37.5 4.5 22.5
4 38 5 23
4.5 38.5 5.5 23.5
5 39 6 24
5.5 39.5 6.5 24.5
6 40 7 25
6.5 40.5 7.5 25.5
7 41 8 26
7.5 41.5 8.5 26.5
8 42 9 27
8.5 42.5 9.5 27.5
9 43 10 28
9.5 43.5 10.5 28.5
10 44 11 29
10.5 44.5 11.5 29.5
11 45 12 30
12 46 13 31
13 48.5 14 32
14 49.5 15 33
15 50.5 16 34
16 51 17 35
17 52 18 36

Source: ugg.com size guide

Frequently Asked Questions

Should I size down in sheepskin boots?

UGG say the boots run true to size and do not tend to run big. They should feel snug at the heel, not baggy, with wiggle room at the toes.

What if I take a half size?

Measure both feet and use the longer one against their chart. They do not tell you to round up automatically when you fall between sizes.

Are women’s and men’s UK sizes the same length?

A women’s UK 5 and a men’s UK 5 are both 24 cm on the UGG charts. The EU size is not the same: EU 38 for women, EU 39 for men. Match the chart to the pair, and do not convert EU on your own.

Will they fit a wide foot?

A standard fit should have a little room at the sides and the toes. If the forefoot or the instep presses, UGG say take one size up.

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