GPM to Pipe Size Estimator
Estimate pipe size from required flow rate. Free, instant.
How to Use GPM to Pipe Size Estimator
1
Enter required flow rate.
2
Enter max velocity.
3
Get minimum pipe ID.
Frequently Asked Questions
Max water velocity?
4-5 ft/s for supply. 8-10 ft/s for copper. Lower = less noise and erosion.