35 free tools · 5 focused sections
Excavation & Drainage calculators
Plan earthwork, drainage and water-management projects with volume, weight, grade, slope and transport estimates.
Selection guidance
Choose the right excavation & drainage calculator
Define the water or soil quantity
Use runoff, trench or excavation tools before selecting conveyance, storage or hauling equipment.
Keep volume states separate
Bank, loose and compacted soil volumes are different and should not be interchanged.
Verify hydraulic design
Pipe size, slope, inlet conditions and storm criteria require project-specific checks beyond a planning calculator.
8 calculators
Earthwork, trenches & hauling
Excavation volume, trenches, foundation drainage, truckloads, spoil, compaction and dumpster sizing.
5 calculators
Roof, gutter & downspout drainage
Roof runoff, gutter slope, outlets and downspout capacity.
9 calculators
Surface runoff, erosion & grading
Rainfall runoff, erosion controls, silt fence, swales, rain gardens, slope and paved-surface planning.
8 calculators
Drains, dry wells & ponds
French drains, dry wells, pond volume and other subsurface drainage planning.
5 calculators
Additional drainage planning
Additional drainage and grading calculators.
About these calculators
Berm volume, culvert pipe ordering, erosion-control blankets, silt fence, French-drain gravel, catch-basin gravel, excavation cost, gutter capacity, trench bedding, gutter slope, excavation truckloads, soil compaction, foundation drainage, downspout sizing, asphalt sealcoat, dumpsters, rain gardens, dry wells, trench spoil, swales, roof drainage, runoff and pond calculators. Each tool provides a task-specific estimate, explains its assumptions, and rounds purchasing quantities where appropriate. Supplier specifications and local requirements remain the final authority.