Free calculator

Driveway Base Rock Calculator

Calculate compacted volume, order volume (+12% compaction allowance), and tonnage for a driveway base rock section.

Recommended minimum: 8" of base rock (3" or larger) compacted in lifts, capped with 4" of 1½" minus or ¾" minus. All driveway rock should be minus rock — the fines bind the material together. Compact each lift separately before adding the next.

Results

Enter your dimensions and hit Calculate.

Base depth depends on subgrade conditions and expected loads. A driveway carrying concrete trucks or heavy equipment needs more base than a passenger-car driveway — consult your contractor.

Assumptions

  • 12% volume allowance for compaction — loose material ordered will compact down to the target depth.
  • Tonnage is ceiling-rounded to the nearest whole ton.
  • Rectangular footprint; for curved driveways, break into straight segments.

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Land Planning Master Checklist

The complete checklist for planning your property — from raw land to build-ready site. Clearing, access, drainage, septic, utilities, permits, foundation, and everything in between.

  • ✓Every stage in the right sequence
  • ✓What to verify before each phase starts
  • ✓Questions to ask your contractor
  • ✓Common mistakes and how to avoid them

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