inside	inside	inside	inside	number sizes	wheat sheaf
diameter	diameter	circumference	circumference	us/canada	british	japanese	swiss
(inches)	(mm)	(inches)	(mm)	standard	irish	equivalent	equivalent
					australian
					equivalent
0.458	11.6	1.438	36.5	0
0.466	11.8	1.463	37.2	1/4
0.474	12.0	1.488	37.8	1/2	a
0.482	12.2	1.513	38.4	3/4	a 1/2
0.490	12.4	1.539	39.1	1	b	1
0.498	12.6	1.564	39.7	1 1/4	b 1/2
0.506	12.9	1.589	40.4	1 1/2	c
0.514	13.1	1.614	41.0	1 3/4	c 1/2
0.522	13.3	1.639	41.6	2	d	2	1.50
0.530	13.5	1.664	42.3	2 1/4	d 1/2
0.538	13.7	1.689	42.9	2 1/2	e	3	2.75
0.546	13.9	1.714	43.5	2 3/4	e 1/2
0.554	14.1	1.740	44.2	3	f	4	4.00
0.562	14.3	1.765	44.8	3 1/4	f 1/2	5	5.25
0.570	14.5	1.790	45.5	3 1/2	g
0.578	14.7	1.815	46.1	3 3/4	g 1/2	6	6.50
0.586	14.9	1.840	46.7	4	h	7
0.594	15.1	1.865	47.4	4 1/4	h 1/2		7.75
0.602	15.3	1.890	48.0	4 1/2	i	8
0.610	15.5	1.915	48.7	4 3/4	j		9.00
0.618	15.7	1.941	49.3	5	j 1/2	9
0.626	15.9	1.966	49.9	5 1/4	k		10.00
0.634	16.1	1.991	50.6	5 1/2	k 1/2	10
0.642	16.3	2.016	51.2	5 3/4	l		11.75
0.650	16.5	2.041	51.8	6	l 1/2	11	12.75
0.658	16.7	2.066	52.5	6 1/4	m	12
0.666	16.9	2.091	53.1	6 1/2	m 1/2	13	14.00
0.674	17.1	2.116	53.8	6 3/4	n
0.682	17.3	2.141	54.4	7	n 1/2	14	15.25
0.690	17.5	2.167	55.0	7 1/4	o
0.698	17.7	2.192	55.7	7 1/2	o 1/2	15	16.50
0.706	17.9	2.217	56.3	7 3/4	p
0.714	18.1	2.242	56.9	8	p 1/2	16	17.75
0.722	18.3	2.267	57.6	8 1/4	q
0.730	18.5	2.292	58.2	8 1/2	q 1/2	17
0.738	18.7	2.317	58.9	8 3/4	r		19
0.746	18.9	2.342	59.5	9	r 1/2	18
0.754	19.2	2.368	60.1	9 1/4	s		20.25
0.762	19.4	2.393	60.8	9 1/2	s 1/2	19
0.770	19.6	2.418	61.4	9 3/4	t		21.5
0.778	19.8	2.443	62.1	10	t 1/2	20
0.786	20.0	2.468	62.7	10 1/4	u	21
0.794	20.2	2.493	63.3	10 1/2	u 1/2	22	22.75
0.802	20.4	2.518	64.0	10 3/4	v
0.810	20.6	2.543	64.6	11	v 1/2	23
0.818	20.8	2.569	65.2	11 1/4	w		25
0.826	21.0	2.594	65.9	11 1/2	w 1/2	24
0.834	21.2	2.619	66.5	11 3/4	x
0.842	21.4	2.644	67.2	12	x 1/2	25	27.50
0.850	21.6	2.669	67.8	12 1/4	y
0.858	21.8	2.694	68.4	12 1/2	z	26	28.75
0.866	22.0	2.719	69.1	12 3/4	z 1/2
0.874	22.2	2.744	69.7	13		27
0.882	22.4	2.769	70.3	13 1/4	z1
0.890	22.6	2.795	71.0	13 1/2
0.898	22.8	2.820	71.6	13 3/4	z2
0.906	23.0	2.845	72.3	14	z3
0.914	23.2	2.870	72.9	14 1/4
0.922	23.4	2.895	73.5	14 1/2	z4
0.930	23.6	2.920	74.2	14 3/4
0.938	23.8	2.945	74.8	15
0.946	24.0	2.970	75.4	15 1/4
0.954	24.2	2.996	76.1	15 1/2
0.962	24.4	3.021	76.7	15 3/4
0.970	24.6	3.046	77.4	16
0.978	24.8	3.071	78.0	16 1/4
0.986	25.0	3.096	78.6	16 1/2
0.994	25.2	3.121	79.3	16 3/4
1.002	25.5	3.146	79.9	17
1.010	25.7	3.171	80.6	17 1/4
1.018	25.9	3.197	81.2	17 1/2
1.026	26.1	3.222	81.8	17 3/4
1.034	26.3	3.247	82.5	18
1.042	26.5	3.272	83.1	18 1/4
1.050	26.7	3.297	83.7	18 1/2
1.058	26.9	3.322	84.4	18 3/4
1.066	27.1	3.347	85.0	19
1.074	27.3	3.372	85.7	19 1/4
1.082	27.5	3.397	86.3	19 1/2
1.090	27.7	3.423	86.9	19 3/4
1.098	27.9	3.448	87.6	20
1.106	28.1	3.473	88.2	20 1/4
1.114	28.3	3.498	88.8	20 1/2
1.122	28.5	3.523	89.5	20 3/4
1.130	28.7	3.548	90.1	21
1.138	28.9	3.573	90.8	21 1/4
1.146	29.1	3.598	91.4	21 1/2
1.154	29.3	3.624	92.0	21 3/4
1.162	29.5	3.649	92.7	22
1.170	29.7	3.674	93.3	22 1/4
1.178	29.9	3.699	94.0	22 1/2
1.186	30.1	3.724	94.6	22 3/4
1.194	30.3	3.749	95.2	23
1.202	30.5	3.774	95.9	23 1/4
1.210	30.7	3.799	96.5	23 1/2
1.218	30.9	3.825	97.1	23 3/4
1.226	31.1	3.850	97.8	24
1.234	31.3	3.875	98.4	24 1/4
1.242	31.5	3.900	99.1	24 1/2
1.250	31.8	3.925	99.7	24 3/4
1.258	32.0	3.950	100.3	25
1.266	32.2	3.975	101.0	25 1/4
1.274	32.4	4.000	101.6	25 1/2
1.282	32.6	4.025	102.2	25 3/4
1.290	32.8	4.051	102.9	26
1.298	33.0	4.076	103.5	26 1/4