Cobblestone Calculator
Estimate the cobblestone and base material needed for driveways, edging, and decorative paving by area and coverage.
Cobblestone Calculator (Coverage & Base Material) Guide
The cobblestone calculator helps you estimate the cobblestone and base materials for driveways, garden edging, and decorative paving. Cobblestone is set on a compacted base and bedding layer, so a lasting job needs more than just the stone itself—and this tool helps you size every layer.
Planning a Cobblestone Project
Start with the area you're paving (length × width). Below the cobbles you'll need a 4–6 inch compacted stone base for foot traffic—deeper for a driveway—topped with about an inch of bedding sand to set and level each stone. Size the base with our paver base material calculator and the bedding layer with our sand calculator.
Frequently Asked Questions
What base do I need under cobblestone?
Use 4–6 inches of compacted crushed stone for walkways and patios, and 8–12 inches for driveways that carry vehicles. Top the base with about 1 inch of bedding sand to set and level each cobblestone.
How are cobblestones sold and estimated?
Cobblestones are sold by the piece, pallet, or square foot of coverage. Estimate by your paving area, then add 5–10% for cuts and breakage. Irregular natural cobbles need a higher waste allowance than uniform manufactured ones.
Is cobblestone good for a driveway?
Yes—cobblestone is extremely durable and handles vehicle traffic for decades when laid on a deep, well-compacted base. The key is a 8–12 inch compacted base, proper edge restraints, and sand-filled joints to lock the stones in place.