🧱 Interlock Calculator
Calculate pavers, base material, and sand for your patio or walkway project.
Enter Your Measurements
How It Works
Calculation Method
- Choose your area shape and enter dimensions
- Select paver size and base depth
- Set waste factor for cuts and breakage
- Calculate pavers and pallets needed
- Calculate base material (HPB)
- Calculate bedding sand (1" depth)
Tips for Northumberland County
- Always excavate 8-10" below final grade
- Use HPB (High Performance Bedding) for drainage
- Compact base in 2-3" lifts
- Slope away from structures (1/4" per foot)
- Seal pavers after 3-6 months
Recommended Base Depths
- 4" - Walkways and light use
- 6" - Patios and standard use
- 8" - Driveways and heavy use