DIY paver guide
Paver Base Depth Calculator
Use this paver base depth calculator to compare 4 inch, 6 inch, and 8 inch planning depths before ordering aggregate. Depth changes cubic yards, tons, bags, and cost.
Quick answer
- 4 inches is a common planning default for many pedestrian patios and walkways.
- 6 inches adds 50% more aggregate and is often safer for freeze-thaw exposure or weaker soil.
- 8 inches is a planning starting point for light paver driveway estimates, not an engineered specification.
Base depth selection guide
| Use case | Planning depth | Why | 12x12 tons |
|---|---|---|---|
| Patio / walkway | 4 in | Stable soil and pedestrian use | 3.13 |
| Freeze-thaw patio | 6 in | Frost, drainage, or poor soil buffer | 4.69 |
| Light-duty driveway | 8 in | Vehicle load planning | 6.26 |
| Repair over existing base | 2-3 in | Only when stable base already exists | 1.56-2.35 |
12x12 ton estimates use 10% allowance and 1.6 tons/cu yd. Confirm vehicle areas locally.
Interactive estimator
Paver Base calculator
Example 10x10 patio: base is about 1.36 cu yd, 2.17 tons, or 74 half-cubic-foot bags.
Enter your own length, width, depth, density, and bag size to create a supplier order.
How depth changes material
Base volume scales directly with depth. A 6 inch base uses 50% more material than 4 inches, and an 8 inch base uses twice as much material as 4 inches.
That extra material affects delivery weight, bag count, labor, and excavation depth.
Depth is not the only design choice
Drainage, soil, compaction, geotextile fabric, slope, and edge restraint all affect patio performance. A deeper base does not fix trapped water or poor compaction by itself.
Use this calculator for planning quantities, then confirm local requirements for freeze-thaw climates, clay soil, or driveway use.
Helpful next step
Use the complete paver material calculator when you want one combined order list for pavers, base, bedding sand, polymeric sand, edging, and cost. Use the focused calculators when you need to tune one material at a time.