🧮 TradeCalcsPRO

Professional Paver & Hardscape Material Calculator

Instantly estimate pavers, compacted base gravel, bedding sand, and polymeric sand for patios, walkways, and driveways. Adjust waste margin for cuts, breakage, and layout patterns.

Project Dimensions

ft
ft
in
in
in
in
10%
0%30%

Live Results

Total Area

100.00sq ft

Pavers Needed

496

Base Gravel

1.36 cu yd

Base Gravel

1.90 tons

Bedding Sand

0.34 cu yd

Bedding Sand

0.46 tons

50 lb Bags

19

Polymeric Sand

55 lbs

Pavers and bags are rounded up to whole units. Volumes include waste allowance.

How to Use This Paver Calculator

  1. Measure your project area. Measure the length and width of your patio, walkway, or driveway in feet. Use the longest points and account for any curves by breaking the area into rectangles.
  2. Enter paver dimensions. Check your paver product label for exact length and width in inches. Common brick-style pavers are 4×8 inches; larger patio pavers may be 12×12 or 16×16 inches.
  3. Set base and bedding depths. Use 4 inches of compacted gravel base for pedestrian patios and 6–8 inches for driveways. Bedding sand is typically 1 inch screeded over the compacted base before laying pavers.
  4. Adjust waste margin. Set 10% waste for straight grid layouts. Increase to 15–20% for diagonal, herringbone, or curved patterns where cuts generate more scrap.
  5. Review material quantities. Use the live results to order pavers, gravel by the cubic yard or ton, bedding sand, and polymeric sand for joint filling. Round up partial orders at the supplier.

Formulas & Example

Hardscape material estimates start with the project area in square feet. Paver count divides area by individual paver footprint (length and width converted from inches to feet). Base gravel and bedding sand volumes convert depth from inches to feet, multiply by area for cubic feet, then divide by 27 for cubic yards. Waste margin is applied to all material quantities.

Area (sq ft) = Length (ft) × Width (ft)

Pavers Needed = CEIL(Area ÷ Paver Area) × (1 + Waste % ÷ 100)
  where Paver Area = (Paver Length ÷ 12) × (Paver Width ÷ 12)

Base Gravel (cu yd) = (Area × Base Depth ÷ 12) ÷ 27 × (1 + Waste % ÷ 100)
Base Gravel (tons) = Base Gravel (cu yd) × 1.4

Bedding Sand (cu yd) = (Area × Sand Depth ÷ 12) ÷ 27 × (1 + Waste % ÷ 100)
Bedding Sand (tons) = Bedding Sand (cu yd) × 1.35
50 lb Bags = CEIL(Bedding Sand tons × 2000 ÷ 50)

Polymeric Sand (lbs) = Area × 0.5 × (1 + Waste % ÷ 100)

Worked Example

A 10 ft × 10 ft patio using 4×8 inch pavers with 4-inch base gravel, 1-inch bedding sand, and 10% waste:

Area = 10 × 10 = 100 sq ft

Paver Area = (4 ÷ 12) × (8 ÷ 12) = 0.222 sq ft
Pavers = CEIL(100 ÷ 0.222) × 1.10 = 450 × 1.10 = 495 pavers

Base Gravel:
  Volume = 100 × (4 ÷ 12) = 33.33 cu ft
  Cubic Yards = 33.33 ÷ 27 = 1.23 CY
  With Waste = 1.23 × 1.10 = 1.36 CY
  Tons = 1.36 × 1.4 = 1.90 tons

Bedding Sand:
  Volume = 100 × (1 ÷ 12) = 8.33 cu ft
  Cubic Yards = 8.33 ÷ 27 = 0.31 CY
  With Waste = 0.31 × 1.10 = 0.34 CY
  Tons = 0.34 × 1.35 = 0.46 tons
  50 lb Bags = CEIL(0.46 × 2000 ÷ 50) = 19 bags

Polymeric Sand = 100 × 0.5 × 1.10 = 55 lbs

Gravel and sand tonnage uses standard conversion factors of 1.4 tons per cubic yard for compacted aggregate base and 1.35 tons per cubic yard for bedding sand. Actual weight varies by moisture content and material source — confirm with your supplier.

Frequently Asked Questions

How deep should a paver base be?â–¾
For pedestrian patios and walkways, a 4-inch compacted gravel base over well-drained soil is standard. Driveways and areas with vehicle traffic require 6–8 inches of compacted base, sometimes with a geotextile fabric separator. Always compact in 2–3 inch lifts with a plate compactor. The bedding sand layer (typically 1 inch) sits on top of the compacted base and is not included in the gravel base depth.
Am I getting ripped off on my hardscape quote?â–¾
Use this calculator to generate your own material takeoff before signing a contract. Compare your paver count, gravel cubic yards, and sand quantities against the contractor's line items. Material markup of 15–25% is normal; labor rates vary by region. Red flags include vague quantities ("about 3 yards"), no waste factor, or material costs far above retail bulk pricing. A detailed quote should itemize pavers, base, sand, edge restraint, and labor separately.
Can I skip the bedding sand?â–¾
No — bedding sand is essential for a level, stable paver surface. It allows fine adjustment of each paver height and compensates for minor irregularities in the compacted base. Without it, pavers rock, joints open unevenly, and the surface fails prematurely. Use coarse, washed concrete sand (not play sand or masonry sand) screeded to a uniform 1-inch depth before laying pavers.
What is the difference between open-graded and dense-graded base?â–¾
Open-graded base (often #57 stone) has fewer fines, drains faster, and is preferred under permeable paver systems. Dense-graded aggregate (often 21A or crusher run) contains fines that compact into a solid, stable layer — the most common choice for standard interlocking paver installations. Both work when properly compacted; match your base type to drainage requirements and local supplier availability.
How much polymeric sand do I need?â–¾
Plan on roughly 0.5 lbs of polymeric sand per square foot of paver surface for standard joint widths (1/8 to 1/4 inch). Wider joints require more sand. This calculator applies your waste margin to the polymeric sand estimate. Always follow the manufacturer's coverage chart for your specific product, as grain size and joint width affect consumption significantly.

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