Landscaping Calculators
Precision calculators for landscaping professionals and operations.
Bedding Stone
Calculate tons or cubic yards of bedding stone, gravel, or crushed rock from area and depth.
French Drain Flow
Use Manning's Equation to calculate the maximum GPM flow capacity and self-cleaning velocity for French drains and yard drainage pipes. Compare corrugated vs smooth PVC pipe performance at any slope grade.
Geogrid Length
Calculate minimum geogrid embedment length for segmental retaining walls based on wall height and surcharge loading conditions. Covers level backfill, pedestrian, and vehicular surcharge with the industry 4-foot minimum override.
Irrigation Zone
Calculate total irrigation zone GPM demand from sprinkler head count and flow rates, then verify supply pipe velocity stays under the 5 FPS limit to prevent water hammer, friction loss, and blown fittings.
Mulch Topsoil Volume Estimator
Calculate exactly how many cubic yards or bags of mulch, topsoil, or compost you need. Includes compaction factors, coverage tables, and bulk vs. bag cost breakdowns for landscaping projects.
Paver Polymeric Sand
Calculate paver counts, bedding sand tonnage, and polymeric joint sand bags for patios, walkways, and driveways. Includes waste factors, joint void math, and screed depth guidelines.
Precipitation Rate
Calculate sprinkler precipitation rate (in/hr) and required run times for any irrigation zone. Match application rates to soil infiltration to eliminate runoff and water waste.
Weep Hole Drainage
Calculate drainage stone volume, weep hole spacing, and pipe sizing to prevent hydrostatic blowouts behind retaining walls. Includes clay soil multipliers and code-compliant spacing tables.