Best viewed in Landscape Mode on phones:

Pipe – Measures Inside Diameter
Nominal	Outside			Inside	Weight
Pipe Size	Diameter		Wall	Diameter	Per Foot
Inches	Inches	Schedule	Inches	Inches	Lbs.
1/8	0.405	40S – Std.	0.068	0.269	0.2447
1/4	0.540	40S – Std.	0.088	0.364	0.4248
3/8	0.675	40S – Std.	0.091	0.493	0.5676
1/2	0.840	40S – Std.	0.109	0.622	0.8510
		80S – Ex. Hvy.	0.147	0.546	1.0880
3/4	1.050	40S – Std.	0.113	0.824	1.1310
		80S – Ex. Hvy.	0.154	0.742	1.4740
1	1.315	40S – Std.	0.133	1.049	1.6790
		80S – Ex. Hvy.	0.179	0.957	2.1720
1 1/4	1.660	40S – Std.	0.140	1.380	2.2730
		80S – Ex. Hvy.	0.191	1.278	2.9970
1 1/2	1.900	40S – Std.	0.145	1.610	2.7180
		80S – Ex. Hvy.	0.200	1.500	3.6310
2	2.375	40S – Std.	0.154	2.067	3.6530
		80S – Ex. Hvy.	0.218	1.939	5.0220
2 1/2	2.875	40S – Std.	0.203	2.469	5.7930
		80S – Ex. Hvy.	0.276	2.323	7.6610
3	3.500	40S – Std.	0.216	3.068	7.5760
		80S – Ex. Hvy.	0.300	2.900	10.2500
3 1/2	4.000	40S – Std.	0.226	3.548	9.1090
		80S – Ex. Hvy.	0.318	3.364	12.5000
4	4.500	40S – Std.	0.237	4.026	10.7900
		80S – Ex. Hvy.	0.337	3.826	14.9800
5	5.563	40S – Std.	0.258	5.047	14.6200
		80S – Ex. Hvy.	0.375	4.813	20.7800
6	6.625	40S – Std.	0.280	6.065	18.9700
		80S – Ex. Hvy.	0.432	5.761	28.5700
8	8.625	20	0.250	8.125	22.3600
		40S – Std.	0.322	7.981	28.5500
		80S – Ex. Hvy.	0.500	7.625	43.3900
10	10.750	20	0.250	10.250	28.0400
		40S – Std.	0.365	10.020	40.4800
		80S – Ex. Hvy.	0.500	9.750	54.7400
12	12.750	40S – Std.	3.750	12.000	49.5600
		80S – Ex. Hvy.	0.500	11.750	65.4200
14	14.000	Std.	0.375	13.250	54.5700
16	16.000	Std.	0.375	15.250	62.5800
18	18.000	Std.	0.375	17.250	70.5900
20	20.000	Std.	0.375	19.250	78.6000