Paver Base Calculator: Free Online Paver Base Calculator

Use our free paver base calculator to determine how much crushed stone base material you need under a paver patio, walkway, or driveway. Built for contractors and DIY installers alike, it converts your project dimensions and compacted base depth into cubic yards and tons of base material so you can order the right amount from the quarry or supply yard.

How to use this calculator.

1. Enter the paver area length and width. Measure the full footprint of the patio, walkway, or driveway you're installing, in feet.
2. Set the base depth. Input the compacted thickness of crushed stone base in inches: 4-6 inches for patios and walkways, 8-12 inches for driveways.
3. Review the paver area. Confirm the calculated square footage matches your layout.
4. Check the base volume and weight. The calculator returns cubic yards of base material and its estimated weight in tons.
5. Order with a margin. Round up to the nearest half-yard and add extra for compaction loss before calling your supplier.

How do you calculate paver base material quantity?

To find base material volume, multiply the paver area by the compacted base depth (converted from inches to feet), then divide by 27 to convert cubic feet into cubic yards. Multiply the volume by a density factor to get weight in tons.

Base Volume (cu yd) = Length (ft) × Width (ft) × (Base Depth (in) ÷ 12) ÷ 27

Base Weight (tons) = Base Volume (cu yd) × 1.4

Where:

• Length and Width: The outer dimensions of the paver area, in feet.
• Base Depth: The compacted thickness of the crushed stone base layer, in inches.
• 1.4: The approximate weight, in tons, of one compacted cubic yard of crushed stone base (roughly 2,800 lb/cu yd for 3/4-inch minus road base).

Example calculation.

Let's size the base for a backyard paver patio.

Scenario: You're building a 15 ft × 10 ft patio with a 6-inch compacted base of crushed stone.

1. Calculate the area: 15 ft × 10 ft = 150 sq ft
2. Convert depth to feet: 6 inches ÷ 12 = 0.5 ft
3. Calculate volume in cubic feet: 150 sq ft × 0.5 ft = 75 cu ft
4. Convert to cubic yards: 75 cu ft ÷ 27 = 2.78 cu yd
5. Calculate weight in tons: 2.78 cu yd × 1.4 tons/cu yd = 3.89 tons

Result: You need approximately 2.78 cubic yards (about 3.9 tons) of crushed stone base for this patio, before adding a compaction margin.

Tips from the field.

• Use angular crushed stone, not round gravel. 3/4-inch minus road base or crusher run compacts into a hard, interlocking surface. Round pea gravel never locks up and will shift under load.
• Compact in lifts. Spread and compact base material in 2-3 inch layers rather than dumping the full depth at once. Each lift needs its own pass with a plate compactor.
• Match depth to use. Foot-traffic patios need 4-6 inches of base; driveways carrying vehicle loads need 8-12 inches, sometimes more over soft or clay soils.
• Add geotextile fabric over poor soil. A woven fabric barrier between subgrade and base keeps fines from migrating up and prevents settling in wet or clay-heavy ground.
• Order a little extra. Compaction, spillage, and uneven subgrade excavation typically eat 5-10% more material than the raw calculation, so round up before you order.

Disclaimer: This calculator provides estimates for planning purposes only. Actual material requirements vary based on soil conditions, compaction, base material type, and site-specific factors. For structural or load-bearing applications, consult a licensed contractor or engineer. PavementCalculator.com assumes no liability for material overages or shortages.