Landscaping Estimate Calculator

Each material row computes its own quantity (cubic yards for volume materials, square feet for sod and pavers, short tons for gravel weight basis), applies a per-row waste factor, and emits a line total. The job rolls up to total cost, then prices via margin or markup.

volume materials (mulch / topsoil / concrete):
  cu_yd = (L_ft × W_ft × (D_in / 12)) / 27
  cost  = cu_yd × $/cu yd × (1 + waste)

gravel (weight basis, default):
  cu_yd = (L_ft × W_ft × (D_in / 12)) / 27
  tons  = cu_yd × density (t/cu yd)
  cost  = tons × $/ton × (1 + waste)

sod / pavers (area materials):
  cost  = sq_ft × $/sq ft × (1 + waste)
  pavers/sqft = 144 / (paverW_in × paverL_in)
  paverCount  = ceil(sq_ft × pavers/sqft × (1 + waste))

aggregate:
  materialsCost  = Σ row.lineTotal
  laborCost      = hours × rate × crew
  overheadCost   = (materials + labor) × contingency
  totalCost      = materials + labor + overhead
  estimatedPrice (markup) = totalCost × (1 + markup)
  estimatedPrice (margin) = totalCost / (1 − margin)

Default unit prices and waste factors come from US 2026 consensus ranges (Lawnstarter, HomeGuide, Angi, Inch Calculator, Omnicalculator). Density 1.5 t/cu yd is the standard gravel average — verify against your supplier's quote. Tax is excluded.