Pipe Chart

Schedule 40 & 80 Pipe Sizes

Nom. Pipe Size (in.)	O.D. Average	I.D. Min.	Wall	Nom. Wt./Ft.
1/8"	0.405	0.249	0.068	0.051
1/4"	0.540	0.344	0.088	0.086
3/8"	0.675	0.473	0.091	0.115
1/2"	0.840	0.602	0.109	0.170
3/4"	1.050	0.804	0.113	0.226
1"	1.315	1.029	0.133	0.333
1-1/4"	1.660	1.360	0.140	0.450
1-1/2"	1.900	1.590	0.145	0.537
2"	2.375	2.047	0.154	0.720
2-1/2"	2.875	2.445	0.203	1.136
3"	3.500	3.042	0.216	1.488
3-1/2"	4.000	3.521	0.226	1.789
4"	4.500	3.998	0.237	2.118
5"	5.563	5.016	0.258	2.874
6"	6.625	6.031	0.280	3.733
8"	8.625	7.942	0.322	5.619
10"	10.750	9.976	0.365	7.966
12"	12.750	11.889	0.406	10.534
14"	14.000	13.073	0.437	12.462
16"	16.000	14.940	0.500	16.286
18"	18.000	16.809	0.562	20.587
20"	20.000	18.743	0.593	24.183
24"	24.000	22.544	0.687	33.652

Nom. Pipe Size (in.)	O.D. Average	I.D. Min.	Wall	Nom. Wt./Ft.
1/8"	0.405	0.195	0.095	0.063
1/4"	0.540	0.282	0.119	0.105
3/8"	0.675	0.403	0.126	0.146
1/2"	0.840	0.526	0.147	0.213
3/4"	1.050	0.722	0.154	0.289
1"	1.315	0.936	0.179	0.424
1-1/4"	1.660	1.255	0.191	0.586
1-1/2"	1.900	1.476	0.200	0.711
2"	2.375	1.913	0.218	0.984
2-1/2"	2.875	2.290	0.276	1.500
3"	3.500	2.864	0.300	2.010
3-1/2"	4.000	3.326	0.318	2.452
4"	4.500	3.786	0.337	2.938
5"	5.563	4.768	0.375	4.078
6"	6.625	5.709	0.432	5.610
8"	8.625	7.565	0.500	8.522
10"	10.750	9.493	0.593	12.635
12"	12.750	11.294	0.687	17.384
14"	14.000	12.410	0.750	20.852
16"	16.000	14.213	0.843	26.810
18"	18.000	16.014	0.937	33.544
20"	20.000	17.814	1.031	41.047
24"	24.000	21.418	1.218	58.233