Calculate whole paver or reviewed pattern-set demand, explicit allowance, matching stock, supplier packs, delivered units, and surplus without a hidden waste factor.
A quick decision brief for this specific tool
Measured net paved area, one exact reviewed product or pattern-set units per square foot, explicit order allowance, usable matching whole stock, and exact current supplier pack quantity
Base installed units, allowance-adjusted reserve, stock applied, new demand, whole packs, delivered units, coverage capacity and visible surplus
Round the reviewed installed-unit demand to whole units, apply only the entered allowance, subtract compatible stock, then round only the new need to exact supplier packs
Choose your path
Turn one exact reviewed paver or manufacturer-defined pattern-set coverage rate into whole installed demand, explicit reserve, matching-stock allocation and current supplier packs without inventing a pavement section.
Avoid hidden waste and a face-dimension estimate that ignores the selected product or pattern.
Measure net paved shapes, copy the reviewed units-per-square-foot schedule, and enter only the allowance intended for the field layout.
Sees base units and allowance-adjusted reserve separately, with exact pack rounding and surplus.
Use compatible leftover units before buying whole current bundles.
Verify product, size, finish, color and lot compatibility, enter usable whole stock and the supplier's exact pack quantity.
Stock is capped at the reserve, new demand cannot go negative, and zero packs are ordered when stock is sufficient.
Prevent one pooled count from silently approving borders, mixed sizes or pavement construction.
Run each exact product or manufacturer-defined pattern-set as a separate reviewed scenario, then reconcile the field layout and system specification outside the calculator.
The record declines to infer cuts, mixed-product allocation, base, bedding, drainage, edges, traffic or structural suitability.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
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The coverage rate belongs to the exact product or manufacturer-defined pattern set. Nominal face length × width is not treated as installed coverage.
Base whole units = ceil(Net paved area × reviewed installed units per sq ft)Only the entered allowance is applied. The tool does not prescribe a universal percentage for cuts, breakage, future repairs or a laying pattern.
Reserve units = ceil(Base whole units × (1 + entered allowance% ÷ 100))Compatible whole stock is applied before rounding new demand. Delivered units and surplus remain visible so pack rounding is not confused with field demand.
Packs = ceil((Reserve − usable matching stock) ÷ exact units per pack)Updated: August 2026
A homeowner measures 200 sq ft, uses a reviewed 4.5 units/sq ft schedule, enters 10%, and sees 900 base units, 990 reserve units and ten 100-unit packs.
A buyer verifies leftover product/finish/lot compatibility, enters the usable whole units, and purchases only the remaining demand in current supplier packs.
A designer keeps the border and each field product or manufacturer-defined pattern set in separate reviewed scenarios rather than pooling unlike units.
Use the reviewed product or manufacturer-defined pattern-set coverage schedule.
Keep base, bedding, drainage, edges, traffic and structural design outside the procurement count.
Plan one exact paver product or manufacturer-defined pattern set at a time. Measure net paved area, copy its reviewed installed coverage, enter a deliberate allowance, reconcile usable matching stock, and round only the new demand to the supplier’s exact current pack.