Patio Paver Calculator Guide: Layout, Materials & Installation
Quick Answer
- *Pavers needed: area (sq ft) × pavers per sq ft × (1 + waste%).
- *Base depth: 4–6” gravel + 1” sand for patios. 8–12” gravel for driveways.
- *Standard 4×8” pavers: 4.5 per square foot. 12×12”: 1 per sq ft.
- *Total cost: $12–$33 per sq ft installed with concrete pavers.
Calculating Paver Quantity
First, calculate your patio area in square feet (length × width). For irregular shapes, break into rectangles and add them up. Then determine how many pavers fit in one square foot based on their size.
| Paver Size | Pavers per Sq Ft | Coverage per Pallet (~500 pavers) |
|---|---|---|
| 4×8” | 4.5 | ~111 sq ft |
| 6×6” | 4.0 | ~125 sq ft |
| 6×9” | 2.7 | ~185 sq ft |
| 8×8” | 2.25 | ~222 sq ft |
| 12×12” | 1.0 | ~500 sq ft |
Add 5% for running bond patterns, 10–15% for herringbone or diagonal. A 300 sq ft patio with 4×8” pavers in herringbone: 300 × 4.5 × 1.12 = 1,512 pavers.
Base Material Calculations
A solid base is the foundation of a lasting paver patio. You need two layers: compacted gravel (crushed stone, typically ¾” minus) and leveling sand (coarse concrete sand or manufactured sand).
Gravel: For a 300 sq ft patio with 6” base: 300 × 0.5 = 150 cu ft ÷ 27 = 5.6 cubic yards. One ton covers about 80 sq ft at 4” depth. Plan for compaction reducing volume by about 30%.
Sand: At 1” depth before compaction: 300 sq ft × 0.083 ft = 25 cu ft, about 1 cubic yard. You’ll also need polymeric joint sand for filling gaps between pavers — about 1 bag per 40–75 sq ft depending on joint width.
Pattern Options
Running bond: The simplest pattern. Pavers laid in staggered rows like bricks. Easiest to install and wastes the least material. Works with any rectangular paver.
Herringbone (45° or 90°): Pavers laid in a zigzag pattern. The strongest interlock — recommended for driveways and areas with vehicle traffic. More cuts at edges means higher waste.
Basketweave: Pairs of pavers alternating horizontal and vertical. Creates a woven appearance. Simple to lay but requires specific paver proportions (2:1 length to width).
Edge Restraints
Edge restraints keep pavers from shifting outward over time. Options include plastic L-shaped edging (cheapest, good for patios), aluminum edging (durable, cleaner look), and concrete or stone borders (most permanent).
Calculate linear feet by measuring the perimeter. For a 15 × 20 ft patio: perimeter = 70 linear feet. Plastic edging comes in 8-foot sections, so you’d need 9 sections plus spikes (1 per foot).
Installation Steps Overview
- Mark the area and excavate to the required depth (7–9 inches for patios)
- Install geotextile fabric to prevent weed growth and soil migration
- Add gravel base in 2-inch lifts, compacting each with a plate compactor
- Screed 1 inch of leveling sand using pipes or rails as guides
- Lay pavers in your chosen pattern, working from one corner
- Install edge restraints and secure with spikes
- Spread polymeric sand into joints and compact the entire surface
- Mist with water to activate the polymeric sand
Calculate pavers, gravel, and sand for your patio
Use our free Patio Paver Calculator →Frequently Asked Questions
How many pavers do I need per square foot?
Depends on size. 4×8”: 4.5/sq ft. 6×6”: 4/sq ft. 12×12”: 1/sq ft. Add 5–10% for cuts and waste, more for complex patterns.
How deep should the base be for patio pavers?
For foot traffic: 4–6” compacted gravel + 1” sand + paver thickness (2–2.5”). Total excavation: 7–9 inches. Driveways need 8–12” of gravel base.
How much does a paver patio cost?
Materials: $3–$10/sq ft for concrete pavers, plus $1–$3/sq ft for base materials. Professional installation: $8–$20/sq ft for labor. A 300 sq ft patio: $3,600–$9,900 installed.
What is the best paver pattern for a patio?
Running bond is simplest with least waste. Herringbone is strongest for driveways. Pattern choice affects waste: running bond 5%, herringbone 10–15%.
Do patio pavers need a concrete base?
No. Pavers sit on compacted gravel and sand, which allows for slight ground movement without cracking. A flexible base is actually preferred over concrete for most applications.