Hoka Womens Challengers Footwear Size Chart

Hoka's standard width for women's models is B and wide is D width. 

USW	U.K.	E.U.	Japan
5	3	35 1/3	21.5
5.5	3.5	36	22
6	4	36 2/3	22.5
6.5	4.5	38	23
7	5	37 1/3	23.5
7.5	5.5	38 2/3	24
8	6	39 1/3	24.5
8.5	6.5	40	25
9	7	40 2/3	25.5
9.5	7.5	41 1/3	26
10	8	42	26.5
10.5	8.5	42 2/3	27
11	9	43 1/3	27.5
11.5	9.5	44	28
12	10	44 2/3	28.5
12.5	10.5	45 1/3	29
13	11	46	29.5
13.5	11.5	46 2/3	30