Calculate your complete 3-layer patio or walkway in one step: exact paver stone count, compacted crushed stone base tonnage, 1" bedding sand, polymeric joint sand, and edging spikes.
| Material / Application | Standard Spec / Depth | Coverage / Weight | Field Note |
|---|---|---|---|
| 4" × 8" Holland Brick (10×20 cm) | 4.50 stones / sq ft (50 / m²) | 4" gravel base (patio) · 8" (driveway) | +5% running bond · +10% herringbone |
| 6" × 9" Medium Paver (15×22,5 cm) | 2.67 stones / sq ft (30 / m²) | 4–6" compacted crusher run + 1" sand | +7% modular pattern waste |
| 12" × 12" Patio Stone (30×30 cm) | 1.00 stone / sq ft (11.1 / m²) | 4" gravel base + 1" leveling sand | +5–8% cutting waste |
| 16" × 16" Patio Slab (40×40 cm) | 0.56 stones / sq ft (6.25 / m²) | 4" gravel base + 1" leveling sand | +8% perimeter cuts |
| 24" × 24" Architectural Slab (60×60 cm) | 0.25 stones / sq ft (2.78 / m²) | 4–6" base + 1" screeded bedding layer | +10% large-format cut allowance |
Free cubic yard and tonnage calculator for gravel, concrete, mulch, asphalt, roofing, pavers, cinder blocks, topsoil, and paint. Multi-zone builder + printable estimate sheet.
Instant gravel calculator in tons, cubic yards, and 50-lb bags. Supports multiple driveway zones, compaction allowance, pea gravel vs #57 crushed stone densities, and bulk vs bag cost.
Free concrete calculator for slabs, patios, driveways, footings, and round sonotube post holes. Shows cubic yards, 80-lb and 60-lb bag counts, short-load truck fees, and rebar estimate.
Free mulch calculator and estimator: convert flower bed dimensions and tree rings into cubic yards, 2 cu ft bags, and 3 cu ft bags. Compares bagged vs bulk mulch delivery costs.
Free roofing calculator, roof pitch calculator, and roof slope multiplier. Calculates true roof square footage, roofing squares, architectural shingle bundles, underlayment, and cost.
Accurate asphalt calculator in US tons and cubic yards. Uses standard 145 lb/ft³ hot-mix density, roll-down compaction guide, cold-patch 50-lb bag count, and hot-mix plant cost.
Free concrete block calculator and cinder block calculator. Computes 8x8x16 CMU blocks (1.125 per sq ft), courses, 80-lb mortar bags, core fill grout, and concrete footing.
Free paint coverage calculator: enter wall dimensions, doors, windows, coats, and surface texture to get exact gallons, liters, primer needs, and 5-gallon vs 1-gallon can savings.
Free topsoil calculator and sod calculator: convert lawn or raised garden bed dimensions into cubic yards, tons, 40-lb bags, and sod pallets.
For foot-traffic patios and walkways, install 4 to 6 inches of compacted crusher-run gravel (#411 / QP) topped with exactly 1 inch of coarse C-33 screeded bedding sand. Never exceed 1.5 inches of bedding sand, or pavers will settle unevenly. For driveways, increase the compacted gravel base to 8–10 inches.
Each 4" × 8" brick paver covers 32 square inches, so it takes exactly 4.5 pavers per square foot (before adding 5–10% for cuts and waste).