SIZE CHART

Ukraine	INSIDE DIAMETER	INSIDE DIAMETER, INCHES	USA&CA	EU	PL	UK&AU&NZ	JP	FR	SE (SWISS)	DE
13	13.00	0.512	1 3/4	41		C 1/2
	13.21	0.520	2			D	2	41 1/2	1 1/2	13 1/2
13.5	13.41	0.528	21/4	42.5		D 1/2
	13.61	0.526	2 1/2			E	3	42 3/4	2 3/4	13 3/4
	13.83	0.544	2 3/4			E 1/2
14	14.05	0.553	3	44		F	4	44	4	14
	14.15	0.557	3 1/8			F 1/2
	14.25	0.561	3 1/4			F 3/4
	14.36	0.565	3 3/8			G	5	45 1/4	5 1/4
14.5	14.45	0.569	3 1/2	45.5		G 1/4				14 1/2
	14.56	0.573	3 5/8			G 1/2	6
	14.65	0.577	3 3/4			H		46 1/2	6 1/2
	14.86	0.585	4			H 1/2	7			15
15	15.04	0.592	4 1/4	47	8	I		47 3/4	7 3/4
	15.27	0.601	4 1/2		9	I 1/2	8			15 1/4
	15.4	0.606	4 5/8			J		49	9	15 1/2
15.5	15.53	0.611	4 3/4	48.5	10	J 1/4
	15.7	0.618	5			J 1/2	9			15 3/4
	15.8	0.622	5 1/8			K		50	10
	15.9	0.626	5 1/4			K 1/4
16	16	0.630	5 3/8		11	K 1/2	10
	16.1	0.634	5 1/2	50.5		L		51 3/4	11 3/4	16
	16.3	0.642	5 3/4		12	L 1/4
	16.41	0.646	5 7/8			L 1/2
16.5	16.51	0.650	6	52	13	M	12	52 3/4	12 3/4	16 1/2
	16.71	0.658	6 1/4			M 1/2
17	16.92	0.666	6 1/2		14	N	13	54	14	17
	17.13	0.674	6 3/4	53.5		N 1/2
	17.35	0.683	7		15	O	14	55 1/4	15 1/4	17 1/4
17.5	17.45	0.687	7 1/4	55	16	O 1/2
	17.75	0.699	7 1/2			P	15	56 1/2	16 1/2	17 3/4
18	17.97	0.707	7 3/4		17	P 1/2
	18.19	0.716	8	56.5		Q	16	57 3/4	17 3/4	18
	18.35	0.722	8 1/4		18	Q 1/2
18.5	18.53	0.729	8 1/2	58		Q 3/4	17			18 1/2
	18.61	0.733	8 5/8		19	R		59	19
	18.69	0.736	8 3/4			R 1/4
	18.8	0.740	8 7/8			R 1/2
19	18.89	0.748	9	59.5	20	R 3/4	18			19
	19.1	0.752	9 1/8			S		60 1/4	20 1/4
	19.22	0.757	9 1/4			S 1/4
	19.31	0.760	9 3/8		21	S 1/2
	19.41	0.764	9 1/2			S 3/4	19			19 1/2
19.5	19.51	0.768	9 5/8			T		61 1/2	21 1/2
	19.62	0.772	9 3/4	61.5	22	T 1/4
	19.84	0.781	10			T 1/2	20			20
20	20.02	0.788	10 1/4	63	23	U	21	62 3/4	22 3/4
	20.20	0.797	10 1/2			U 1/2	22			20 1/4
	20.32	0.800	10 5/8		24	V		63	23 3/4
20.5	20.44	0.805	10 3/4			V 1/4
	20.68	0.814	11	64.5	25	V 1/2	23			20 3/4
	20.76	0.817	11 1/8			W		65	25
	20.85	0.821	11 1/4			W 1/4
21	20.94	0.824	11 3/8		26	W 1/2
	21.08	0.830	11 1/2			W 3/4	24			21
	21.18	0.834	11 5/8			X		66 1/4	26 1/4
	21.24	0.836	11 3/4	66		X 1/4
	21.3	0.839	11 7/8		27	X 1/2
21.5	21.49	0.846	12		28	Y	25	67 1/2	27 1/2	21 1/4
	21.69	0.854	12 1/4	67.5		Y 1/2
22	21.89	0.862	12 1/2		29	Z	26	68 3/4	28 3/4	21 3/4
	22.1	0.870	12 3/4	69		Z+1/2
	22.33	0.879	13		30	Z+1	27			22
22.5	22.6	0.890	13.5			Z+1.5
	22.69	0.893				Z+2
23	22.92	0.902				Z+2.5
	23.06	0.908				Z+3
	23.24	0.915				Z+3.5
	23.47	0.924				Z+4
23.5	23.55	0.927				Z+4.5
	23.87	0.940				Z+5
	24.27	0.956				Z+6

 

Dari talks About this in more detail and shares some tricks when you need to keep the size measurements secret: https://www.instagram.com/tv/B3CjvFwI3_L/