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PVC Pipe Sizes Chart
PVC Pipe sizes are different than the size the pipe is called. For example, a 1 inch PVC Pipe is actually 1.315 inches in outside diameter, and 1.029 inches in inside diameter. Fittings follow this same pattern, a 1" fitting has a 1.315 inch opening to accept a 1 inch pipe, which actually measures 1.315 inches in diameter. The opening in the fitting and the size of the pipe are exactly the same size; this is called an "interference fit" and the two parts are intended to be "welded" together using PVC glue, which is really a solvent that melts the two parts together.
PVC PipeE Sizes
Schedule 40 Dimensions
| Nom. Pipe Size (in) |
O.D. | Average I.D. |
Min. Wall | Nom. Wt./Ft. |
Max. W.P. PSI* |
| 1/8" | 0.405 | 0.249 | 0.068 | 0.051 | 810 |
| 1/4" | 0.540 | 0.344 | 0.088 | 0.086 | 780 |
| 3/8" | 0.675 | 0.473 | 0.091 | 0.115 | 620 |
| 1/2" | 0.840 | 0.602 | 0.109 | 0.170 | 600 |
| 3/4" | 1.050 | 0.804 | 0.113 | 0.226 | 480 |
| 1" | 1.315 | 1.029 | 0.133 | 0.333 | 450 |
| 1-1/4" | 1.660 | 1.360 | 0.140 | 0.450 | 370 |
| 1-1/2" | 1.900 | 1.590 | 0.145 | 0.537 | 330 |
| 2" | 2.375 | 2.047 | 0.154 | 0.720 | 280 |
| 2-1/2" | 2.875 | 2.445 | 0.203 | 1.136 | 300 |
| 3" | 3.500 | 3.042 | 0.216 | 1.488 | 260 |
| 3-1/2" | 4.000 | 3.521 | 0.226 | 1.789 | 240 |
| 4" | 4.500 | 3.998 | 0.237 | 2.118 | 220 |
| 5" | 5.563 | 5.016 | 0.258 | 2.874 | 190 |
| 6" | 6.625 | 6.031 | 0.280 | 3.733 | 180 |
| 8" | 8.625 | 7.942 | 0.322 | 5.619 | 160 |
| 10" | 10.750 | 9.976 | 0.365 | 7.966 | 140 |
| 12" | 12.750 | 11.889 | 0.406 | 10.534 | 130 |
Schedule 80 Dimensions
| Nom. Pipe Size (in) |
O.D. | Average I.D. |
Min. Wall | Nom. Wt./Ft. |
Max. W.P. PSI* |
| 1/8" | .405 | .195 | 0.095 | 0.063 | 1230 |
| 1/4" | .540 | .282 | 0.119 | 0.105 | 1130 |
| 3/8" | .675 | .403 | 0.126 | 0.146 | 920 |
| 1/2" | .840 | .526 | 0.147 | 0.213 | 850 |
| 3/4" | 1.050 | .722 | 0.154 | 0.289 | 690 |
| 1" | 1.315 | .936 | 0.179 | 0.424 | 630 |
| 1-1/4" | 1.660 | 1.255 | 0.191 | 0.586 | 520 |
| 1-1/2" | 1.900 | 1.476 | 0.200 | 0.711 | 470 |
| 2" | 2.375 | 1.913 | 0.218 | 0.984 | 400 |
| 2-1/2" | 2.875 | 2.290 | 0.276 | 1.500 | 420 |
| 3" | 3.500 | 2.864 | 0.300 | 2.010 | 370 |
| 3-1/2" | 4.000 | 3.326 | 0.318 | 2.452 | 350 |
| 4" | 4.500 | 3.786 | 0.337 | 2.938 | 320 |
| 5" | 5.563 | 4.768 | 0.375 | 4.078 | 290 |
| 6" | 6.625 | 5.709 | 0.432 | 5.610 | 280 |
| 8" | 8.625 | 7.565 | 0.500 | 8.522 | 250 |
| 10" | 10.750 | 9.493 | 0.593 | 12.635 | 230 |
| 12" | 12.750 | 11.294 | 0.687 | 17.384 | 230 |
*Max. Water Pressure at 68 degrees F, Higher temperatures lower the pressure rating.