Steel bending math

	A	B	C	D	E	F
1	Fraction	Letter	Decimal	Millimeters	Avg rating	Estimated

2	1/8		0.1250	3.175		30
3	5/32		0.1563	3.970		60
4	4mm		0.1575	4.000		60
5	11/64		0.1719	4.366		80
6	3/16		0.1875	4.763	100	110
7	5mm		0.1969	5.000		120
8	13/64		0.2031	5.159		130
9	7/32		0.2188	5.558	160	170
10		A	0.2340	5.944		210
11	15/64		0.2344	5.954		210
12	6mm		0.2362	5.999	210	210
13		B	0.2380	6.045	210	220
14		C	0.2420	6.147	220	230
15		D	0.2460	6.248	260	240
16	1/4	E	0.2500	6.350	255	250
17		F	0.2570	6.528	288	270
18		G	0.2610	6.629	285	280
19	17/64		0.2656	6.746		300
20		H	0.2660	6.756	305	300
21		I	0.2720	6.909	335	320
22	7mm		0.2756	7.000		340
23		J	0.2770	7.036		340
24		K	0.2810	7.137	375	360
25	9/32		0.2813	7.145	375	360
26		L	0.2900	7.366		390
27		M	0.2950	7.493	420	410
28	19/64		0.2969	7.541	411	420
29		N	0.3020	7.671		440
30	5/16		0.3125	7.938	475	490
31	8mm		0.3150	8.001		500
32		O	0.3160	8.026		510
33		P	0.3230	8.204	500	540
34	21/64		0.3281	8.334	570	570
35		Q	0.3320	8.433	584	590
36		R	0.3390	8.611	634	620
37	11/32		0.3438	8.733	660	650
38		S	0.3480	8.839		680
39	9mm		0.3543	8.999		710
40		T	0.3580	9.093		740
41	23/64		0.3594	9.129	735	740
42		U	0.3680	9.347		800
43	3/8		0.3750	9.525	815	840
44		V	0.3770	9.576		860
45		W	0.3860	9.804		920
46	25/64		0.3906	9.921		950
47	10mm		0.3937	10.000		980
48		X	0.3970	10.084		1000
49		Y	0.4040	10.262		1060
50	13/32		0.4063	10.320		1070
51		Z	0.4130	10.490	1120	1130
52	27/64		0.4219	10.716		1200
53			0.4331	11.000		1300
54	7/16		0.4375	11.113		1340
55	29/64		0.4531	11.509		1490
56	15/32		0.4687	11.905		1650
57			0.4724	12.000		1690
58	31/64		0.4844	12.303		1820
59	1/2		0.5000	12.700		2000
60