Imperial Fraction	Whitworth	Imperial	Metric
5/32		0.156	3.97
		0.157	4.00
		0.177	4.50
3/16		0.188	4.76
		0.197	5.00
		0.217	5.50
7/32		0.219	5.56
		0.236	6.00
1/4		0.250	6.35
		0.276	7.00
9/32		0.281	7.14
5/16		0.313	7.94
		0.315	8.00
11/32		0.344	8.73
	1/8	0.344	8.74
		0.354	9.00
3/8		0.375	9.53
		0.394	10.00
		0.433	11.00
7/16		0.438	11.11
	3/16	0.445	11.30
		0.472	12.00
1/2		0.500	12.70
		0.512	13.00
	1/4	0.525	13.34
		0.551	14.00
9/16		0.563	14.29
		0.591	15.00
	5/16	0.600	15.24
5/8		0.625	15.88
		0.630	16.00
		0.669	17.00
11/16		0.688	17.46
		0.709	18.00
	3/8	0.710	18.03
		0.748	19.00
3/4		0.750	19.05
		0.787	20.00
13/16		0.813	20.64
	7/16	0.820	20.83
		0.827	21.00
		0.866	22.00
7/8		0.875	22.23
		0.906	23.00
	1/2	0.920	23.37
15/16		0.938	23.81
		0.945	24.00
		0.984	25.00
1		1.000	25.40
	9/16	1.010	25.65
		1.024	26.00
1 1/16		1.063	26.99
		1.063	27.00
	5/8	1.100	27.94
		1.102	28.00
1 1/8		1.125	28.58
		1.181	30.00
1 3/16		1.188	30.16
	11/16	1.200	30.48
1 1/4		1.250	31.75
		1.260	32.00
	3/4	1.300	33.02
1 5/16		1.313	33.34
		1.339	34.00
1 3/8		1.375	34.93
	13/16	1.390	35.31
		1.417	36.00
1 7/16		1.438	36.51
	7/8	1.480	37.59
		1.496	38.00
1 1/2		1.500	38.10
1 9/16		1.563	39.69
		1.575	40.00
	15/16	1.575	40.01
		1.614	41.00
1 5/8		1.625	41.28
	1	1.670	42.42
1 11/16		1.688	42.86
1 3/4		1.750	44.45
		1.811	46.00
1 13/16		1.813	46.04
	1 1/8	1.860	47.24
1 7/8		1.875	47.63
1 15/16		1.938	49.21
		1.969	50.00
2		2.000	50.80
	1 1/4	2.050	52.07
		2.165	55.00
		2.362	60.00