UGG & Koolaburra by UGG Size Chart
Children's - INFANTS: 3-24 months US Children's UK Children's (1) Euro Children's Japan Children's Size (CM) Mexico Children's Size (CM) Chinese Children's Size (MM) Estimated Foot Length (MM)  
0 158.08.08089.0 
10158.58.58593.2 
21179.59.595101.7 
32.518.510.510.5105110.2 
43.519.511.511.5115118.6 
54.52112.512.5125127.1 
652213.013.0130135.5 
Children's - TODDLERS: 2-5 YearsUS Children'sUK Children's(1) Euro Children'sJapan Children's Size (CM)Mexico Children's Size (CM)Chinese Children's Size (MM)Estimated Foot Length (MM) 
43.519.511.511.5115118.6 
54.52112.512.5125127.1 
652213.013.0130135.5 
7623.514.014.0140144.0 
872515.015.0150152.5 
982616.016.0160161.54 
10927.517.017.0170170 
11 1028.518.018.0180178.46 
12 113019.019.0190186.92 
Children's - K I D S: 5-12 YearsUS Children'sUK Children's(1) Euro Children'sJapan Children's Size (CM)Mexico Children's Size (CM)Chinese Children's Size (MM)Estimated Foot Length (MM) 
10927.517.017.0170170 
11 1028.518.018.0180178.46 
12 113019.019.0190186.92 
13 123120.020.0200195 
1 1332.521.021.0210203.46 
2 133.522.022.0220211.92 
3 23523.023.0230220.38 
433624.024.0240224 
543725.025.0250232.46 
653826.026.0260240.92 
Infants- Combo Sizing: 3-24 MonthsUSUK(1) Euro Children'sJapan Children's (CM)Mexico Size (CM)Chinese Size (MM)Estimated Foot Length (MM) 
0 / 10.5168.58.58593.20XS
2 / 321810.510.5105110.20S
4 / 54.020.512.512.5125127.1M
6 / 76.023.514.514.5145144.00L
Men's US Men's UK Men's(1) Euro Men'sJapan Men's (CM)Mexico Size (CM)Chinese Size (MM)  
5438.023.023.0230  
6539.024.024.0240  
6.55.539.524.524.5245  
764025.025.0250  
7.56.540.525.525.5255  
874126.026.0260  
8.57.541.526.526.5265  
984227.027.0270  
9.58.542.527.527.5275  
10943 28.028.0280  
10.59.543.528.528.5285  
1110 4429.029.0290  
11.510.544.529.529.5295  
12114530.030.0300  
13124631.031.0310  
141348.532.032.0320  
151449.533.033.0330  
161550.534.034.0340  
17165135.035.0350  
18175236.036.0360  
Men's EEE US Men's UK Men's(1) Euro Men'sJapan Men's (CM)Mexico Size (CM)Chinese Size (MM)  
7EEE64025.025.0250  
7.5EEE6.540.525.525.5255  
8EEE74126.026.0260  
8.5EEE7.541.526.526.5265  
9EEE84227.027.0270  
9.5EEE8.542.527.527.5275  
10EEE943 28.028.0280  
10.5EEE9.543.528.528.5285  
11EEE10 4429.029.0290  
11.5EEE10.544.529.529.5295  
12EEE114530.030.0300  
12.5EEE11.545.530.530.5305  
13EEE124631.031.0310  
14EEE1348.532.032.0320  
Women's US Women'sUK Women's(1) Euro Women'sJapan Women's (CM)Mexico Size (CM)Chinese Women's size's (MM)  
533622.022.0220  
5.53.536.522.522.5225  
643723.023.0230  
6.54.537.523.523.5235  
753824.024.0240  
7.55.538.524.524.5245  
863925.025.0250  
8.56.539.525.525.5255  
974026.026.0260  
9.57.540.526.526.5265  
1084127.027.0270  
10.58.541.527.527.5275  
1194228.028.0280  
12104329.029.0290