Pipe Volume Calculator
Calculate water volume held in a pipe run from inside diameter and length.
1.5 in pipe × 10 ft =
0.918 gal
Representative value from the Pipe Volume Calculator reference table.
Reference Values
Browse 48 reference values with individual detail pages for quick lookup.
Pipe Volume Calculator
Estimate fluid volume in a pipe run using inside diameter and length.
Contained Volume
—
Reference Table
Use this complete table for quick lookup and internal linking to specific value pages.
| Pipe Segment | Volume (gal) | Volume (L) | Volume (ft³) |
|---|---|---|---|
| 0.5 in pipe × 10 ft | 0.102 gal | 0.39 | 0.0136 |
| 0.5 in pipe × 25 ft | 0.255 gal | 0.97 | 0.0341 |
| 0.5 in pipe × 50 ft | 0.51 gal | 1.93 | 0.0682 |
| 0.5 in pipe × 75 ft | 0.765 gal | 2.9 | 0.1023 |
| 0.5 in pipe × 100 ft | 1.02 gal | 3.86 | 0.1364 |
| 0.5 in pipe × 150 ft | 1.53 gal | 5.79 | 0.2045 |
| 0.75 in pipe × 10 ft | 0.229 gal | 0.87 | 0.0307 |
| 0.75 in pipe × 25 ft | 0.574 gal | 2.17 | 0.0767 |
| 0.75 in pipe × 50 ft | 1.147 gal | 4.34 | 0.1534 |
| 0.75 in pipe × 75 ft | 1.721 gal | 6.52 | 0.2301 |
| 0.75 in pipe × 100 ft | 2.295 gal | 8.69 | 0.3068 |
| 0.75 in pipe × 150 ft | 3.442 gal | 13.03 | 0.4602 |
| 1 in pipe × 10 ft | 0.408 gal | 1.54 | 0.0545 |
| 1 in pipe × 25 ft | 1.02 gal | 3.86 | 0.1364 |
| 1 in pipe × 50 ft | 2.04 gal | 7.72 | 0.2727 |
| 1 in pipe × 75 ft | 3.06 gal | 11.58 | 0.4091 |
| 1 in pipe × 100 ft | 4.08 gal | 15.44 | 0.5454 |
| 1 in pipe × 150 ft | 6.12 gal | 23.17 | 0.8181 |
| 1.25 in pipe × 10 ft | 0.637 gal | 2.41 | 0.0852 |
| 1.25 in pipe × 25 ft | 1.594 gal | 6.03 | 0.2131 |
| 1.25 in pipe × 50 ft | 3.187 gal | 12.07 | 0.4261 |
| 1.25 in pipe × 75 ft | 4.781 gal | 18.1 | 0.6392 |
| 1.25 in pipe × 100 ft | 6.375 gal | 24.13 | 0.8522 |
| 1.25 in pipe × 150 ft | 9.562 gal | 36.2 | 1.2783 |
| 1.5 in pipe × 10 ft | 0.918 gal | 3.48 | 0.1227 |
| 1.5 in pipe × 25 ft | 2.295 gal | 8.69 | 0.3068 |
| 1.5 in pipe × 50 ft | 4.59 gal | 17.38 | 0.6136 |
| 1.5 in pipe × 75 ft | 6.885 gal | 26.06 | 0.9204 |
| 1.5 in pipe × 100 ft | 9.18 gal | 34.75 | 1.2272 |
| 1.5 in pipe × 150 ft | 13.77 gal | 52.13 | 1.8408 |
| 2 in pipe × 10 ft | 1.632 gal | 6.18 | 0.2182 |
| 2 in pipe × 25 ft | 4.08 gal | 15.44 | 0.5454 |
| 2 in pipe × 50 ft | 8.16 gal | 30.89 | 1.0908 |
| 2 in pipe × 75 ft | 12.24 gal | 46.33 | 1.6362 |
| 2 in pipe × 100 ft | 16.32 gal | 61.78 | 2.1817 |
| 2 in pipe × 150 ft | 24.48 gal | 92.67 | 3.2725 |
| 3 in pipe × 10 ft | 3.672 gal | 13.9 | 0.4909 |
| 3 in pipe × 25 ft | 9.18 gal | 34.75 | 1.2272 |
| 3 in pipe × 50 ft | 18.36 gal | 69.5 | 2.4544 |
| 3 in pipe × 75 ft | 27.54 gal | 104.25 | 3.6816 |
| 3 in pipe × 100 ft | 36.72 gal | 139 | 4.9087 |
| 3 in pipe × 150 ft | 55.08 gal | 208.5 | 7.3631 |
| 4 in pipe × 10 ft | 6.528 gal | 24.71 | 0.8727 |
| 4 in pipe × 25 ft | 16.32 gal | 61.78 | 2.1817 |
| 4 in pipe × 50 ft | 32.64 gal | 123.56 | 4.3633 |
| 4 in pipe × 75 ft | 48.96 gal | 185.33 | 6.545 |
| 4 in pipe × 100 ft | 65.28 gal | 247.11 | 8.7266 |
| 4 in pipe × 150 ft | 97.92 gal | 370.67 | 13.09 |
Frequently Asked Questions
Common questions about Pipe Volume Calculator, formulas, and typical use cases.
How is pipe volume calculated?
Pipe volume uses cylinder geometry: volume = π × radius² × length, then converted to gallons or liters.
Why does inside diameter matter more than nominal size?
Contained volume depends on actual inside diameter, which changes with material and wall thickness.
When is pipe volume useful in plumbing work?
It helps estimate flush time, chemical dosing, recirculation behavior, and water age in long runs.
Can this be used for mixed pipe sizes?
For mixed systems, calculate each segment separately and sum the volumes.
Methodology and Review
This page combines a live calculator, precomputed reference values, and FAQ content from the same conversion definition to reduce mismatch between calculator output and lookup tables.
Editorial metadata (author, reviewer, and update date) is rendered on the page and in structured data. See our editorial policy, review process, and corrections policy.
For compliance-sensitive work, verify final values against project requirements, governing standards, and manufacturer documentation.