Driveway Interlocking Paver & Subbase Calculator

Driveway paver installations require heavy-duty subbase prep (6 inches of compacted crushed stone plus 1 inch of bedding sand) to prevent vehicle tire rutting and paver settlement.

To use the Driveway Interlocking Paver & Subbase Calculator, enter your Driveway Length, Driveway Width, Paver Unit Dimensions and other values. The calculator instantly computes Total Interlocking Pavers Needed, Total Driveway Surface Area and more. Results update in real time as you change any input — no submit button needed.

How to Use This Calculator

Enter your Driveway Length (e.g. 40 in ft), Driveway Width (e.g. 16 in ft), Paver Unit Dimensions — choose from 4" x 8" Standard Brick Paver (0.222 sq ft/paver), 6" x 6" Square Paver (0.250 sq ft/paver), 6" x 9" Rectangle Paver (0.375 sq ft/paver), Crushed Stone Subbase Depth (e.g. 6.0 in inches (6" heavy duty)), and Waste & Cut Factor Allowance (e.g. 10 in %). Measure twice before entering dimensions — small measurement errors scale up significantly in material estimates.

The Formula

Paver Count = Ceil[ (Driveway Area sq ft × (1 + Waste Factor %)) ÷ Single Paver Sq Ft ]

Sand Bedding (1 inch depth) cu yds = (Driveway Area × 0.0833) ÷ 27

Crushed Stone Base (6 inch depth) tons = [ (Driveway Area × 0.50) ÷ 27 ] × 1.40 tons/cu yd

Worked Example

40 ft × 16 ft driveway (640 sq ft) with 4"x8" brick pavers, 1" sand bedding, and 6" crushed stone subbase (10% waste):

Paver Count = Ceil[ / 0.2222] = 3,169 pavers.

Bedding Sand = 1.98 cu yds (2.7 tons) | Crushed Stone Base = 16.6 short tons.

Understanding Your Result

Construction estimates are starting points — site conditions, material specifications, and local code requirements will affect final quantities and costs. Always obtain at least three contractor bids for major projects. Local building departments can confirm permit requirements and inspection milestones. Add waste factors appropriate to the material type and complexity: 10% for simple rectangular shapes, 15–20% for complex geometries or custom cuts.