Roc Dakota School Shoe

How to convert to international sizing is shown in the graph below.

UK/AU	EU	US	FOOT LENGTH
8	26	10	17.2 CM
8.5	26	10.5	17.4 CM
9	27	11	17.6 CM
9.5	27	11.5	17.8 CM
10	28	12	18 CM
10.5	28	12.5	18.2 CM
11	29	13	18.5 CM
11.5	29	13.5	18.9 CM
12	30	1	19.3 CM
12.5	30	1.5	19.5 CM
13	32	2	20 CM
13.5	32	2.5	20.5 CM
1	33	3	21 CM
1.5	33	3.5	21.3 CM
2	34	4	21.7 CM
2.5	34	4.5	22 CM
3	36	5	22.4 CM
3.5	36	5.5	22.7 CM
4	37	6	23.1 CM
4.5	37	6.5	23.4 CM
5	38	7	23.9 CM
5.5	38	7.5	24.2 CM

UK/AU	EU	US	FOOT LENGTH
6	40	8	25.2 CM
6.5	40	8.5	25.5 CM
7	41	9	26.2 CM
7.5	41	9.5	26.4 CM
8	42	10	26.6 CM
8.5	42	10.5	26.9 CM
9	43	11	27.4 CM
9.5	43	11.5	27.7 CM
10	44	12	28.4 CM
10.5	44	12.5	28.6 CM
11	45	13	29.2 CM
11.5	45	13.5	29.4 CM
12	46	14	30 CM
13	47	15	30.4 CM
14	48	16	31.2 CM

US/AU	EU	UK	FOOT LENGTH
4	35	2	21.8 CM
4.5	35	2.5	22.1 CM
5	36	3	22.3 CM
5.5	36	3.5	22.5 CM
6	37	4	23.1 CM
6.5	37	4.5	23.3 CM
7	38	5	23.9 CM
7.5	38	5.5	24.1 CM
8	39	6	24.4 CM
8.5	39	6.5	24.9 CM
9	40	7	25.4 CM
9.5	40	7.5	25.6 CM
10	41	8	26.1 CM
10.5	41	8.5	26.3 CM
11	42	9	26.8 CM
11.5	42	9.5	27.2 CM
12	43	10	27.3 CM