Pipe Slope and Fall Calculator
Find the total drop over a drain run. Set your starting elevation and get the end elevation.
Estimate only. Minimum slope depends on pipe size and your local plumbing code. Check with your AHJ.
Result
Fill in your numbers and hit Calculate.
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How the math works
Fall (in) = run (ft) x slope (in per ft)
Percent grade = slope (in per ft) / 12 x 100Free weekly email
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