French Drain Calculator
Estimate trench excavation, gravel, perforated pipe, filter fabric, and cost by drain length, width, and depth.
LIVE CALCULATION
Gravel Needed
6
cubic yards · amount to order
+0.0 cu yd estimated wastage (10%)
Project Summary
Trench Volume-
Gravel Weight-
Perforated Pipe-
Filter Fabric-
Cost Estimate
Gravel (per ton)-
Perforated Pipe-
Filter Fabric-
Estimated Total-
Calculation Assumptions
Drain Run-
Gravel-
Pipe-
Fabric Coverage-
Waste Percentage-
Pricing BasisNot specified
Counts assume a straight, uniformly sized trench bedded in gravel with the pipe centered, fabric lining walls and bed, and 10% over-excavation. Gravel savings, slopes, and junction boxes add material — verify the layout with your drainage plan.
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