The chart below lays out the key dimensional values engineers and installers actually need—nominal size, outside diameter, inside diameter, and wall thickness—for PVC and CPVC in Schedule 40 and Schedule 80. Whether you’re checking fit-up with existing fittings, estimating flow area, comparing Sch 40 vs Sch 80 tradeoffs, or verifying a design before ordering parts, having the dimensions in one place makes the rest of the decisions simpler—and prevents the classic mistake of assuming “2-inch” means what it sounds like.
| Nominal Size | OD (in) | Sch 40 Wall | Sch 40 ID | Sch 40 Weight (lb/ft) | Sch 80 Wall | Sch 80 ID | Sch 80 Weight (lb/ft) |
|---|---|---|---|---|---|---|---|
| 1/8″ | 0.405 | 0.068 | 0.269 | 0.025 | 0.095 | 0.215 | 0.031 |
| 1/4″ | 0.540 | 0.088 | 0.364 | 0.043 | 0.119 | 0.302 | 0.054 |
| 3/8″ | 0.675 | 0.091 | 0.493 | 0.057 | 0.126 | 0.423 | 0.072 |
| 1/2″ | 0.840 | 0.109 | 0.622 | 0.085 | 0.147 | 0.546 | 0.109 |
| 3/4″ | 1.050 | 0.113 | 0.824 | 0.115 | 0.154 | 0.742 | 0.147 |
| 1″ | 1.315 | 0.133 | 1.049 | 0.161 | 0.179 | 0.957 | 0.207 |
| 1-1/4″ | 1.660 | 0.140 | 1.380 | 0.214 | 0.191 | 1.278 | 0.281 |
| 1-1/2″ | 1.900 | 0.145 | 1.610 | 0.255 | 0.200 | 1.500 | 0.341 |
| 2″ | 2.375 | 0.154 | 2.067 | 0.342 | 0.218 | 1.939 | 0.472 |
| 2-1/2″ | 2.875 | 0.203 | 2.469 | 0.538 | 0.276 | 2.323 | 0.718 |
| 3″ | 3.500 | 0.216 | 3.068 | 0.704 | 0.300 | 2.900 | 0.958 |
| 3-1/2″ | 4.000 | 0.226 | 3.548 | 0.847 | 0.318 | 3.364 | 1.172 |
| 4″ | 4.500 | 0.237 | 4.026 | 1.002 | 0.337 | 3.826 | 1.403 |
| 5″ | 5.563 | 0.258 | 5.047 | 1.356 | 0.375 | 4.813 | 1.950 |
| 6″ | 6.625 | 0.280 | 6.065 | 1.770 | 0.432 | 5.761 | 2.720 |
| 8″ | 8.625 | 0.322 | 7.981 | 2.673 | 0.500 | 7.625 | 4.118 |
| 10″ | 10.750 | 0.365 | 10.020 | 3.790 | 0.593 | 9.564 | 6.130 |
| 12″ | 12.750 | 0.406 | 11.938 | 5.020 | 0.687 | 11.376 | 8.460 |
| 14″ | 14.000 | 0.437 | 13.126 | 5.940 | 0.750 | 12.500 | 10.180 |
| 16″ | 16.000 | 0.500 | 15.000 | 7.770 | 0.843 | 14.314 | 13.070 |
MISUMI USA carries a wide range of industrial manufacturing components – including PVC Pipes, and Pipe Cutters – for your next project or machine fix. If you have any questions about measurement or sizing for your piping needs, feel free to connect with our product experts, and engineers. Also, if you are looking for more insights be sure to check out our other blog articles, including: Standard Pipe Schedule Charts, Plastic Pipes Temperature Rating, and more.
Author: Scott Bredemann | Updated: 2/9/2026
Disclaimer:
The content on this webpage is for informational purposes only. MISUMI makes no guarantees, expressed or implied, regarding the accuracy, completeness, or validity of the information. Performance parameters, tolerances, designs, materials, or processes should not be assumed to reflect third-party suppliers’ or manufacturers’ deliverables within MISUMI’s network. Buyers are responsible for specifying their part requirements.