Patio Paver Calculator
Calculate patio paver calculator by square feet. Precise material estimations for building contractors and DIY home builders across USA/UK/Canada.
Calculate Patio Paver Calculator
Enter project dimensions below to compute required material quantities.
Calculation Results
Calculated using verified construction formula: Patio Pavers = (Patio Length * Patio Width) * 4.5 pavers per sq ft * (1 + Waste Margin Pct)
Quick Summary
The Patio Paver Calculator computes concrete paver counts, 1-inch bedding sand volume, 4-inch gravel base volume, 50lb polymeric joint sand bags, total pallet weight, and material costs for backyard patio construction.
- Patio Unit & Pattern Scoping: Adjusts paver piece counts for Herringbone, Running Bond, and Basketweave layout patterns.
- Base Bedding Layers: Itemizes 4-inch crushed gravel sub-base and 1-inch coarse bedding sand.
- Polymeric Joint Sand: Calculates 50lb bags of polymeric joint sand for weed protection.
How to Use the Patio Paver Calculator
- Enter Patio Length in feet.
- Enter Patio Width in feet.
- Select Paver Layout Pattern (Herringbone, Running Bond, Basketweave).
- Adjust the Waste Margin (%) (10% standard, 15% for diagonal herringbone).
- Click Calculate to view total pavers, bedding sand, gravel base, polymeric sand bags, and material cost.
Patio Paver Calculator Formula & Method
This tool utilizes verified construction geometric formulas to compute material requirements:
Total Pavers = (Patio Area * 4.5 pavers/sq ft) * (1 + Waste Margin / 100)
Bedding Sand (yd³) = (Patio Area * 0.0833) / 27
Where:
- Herringbone Pattern: Interlocking 45-degree or 90-degree zig-zag layout providing maximum patio structural stability.
- Bedding Sand: 1-inch layer of un-compacted coarse concrete sand (ASTM C33) under pavers.
- Polymeric Joint Sand: Polymeric sand that hardens after wetting to lock pavers together.
Worked Example
Example: 20ft * 15ft Patio (300 sq ft) with Herringbone Pattern and 10% Waste
- Patio Area: 20 ft * 15 ft = 300 sq ft
- Base Pavers: 300 sq ft * 4.5 = 1,350 pavers
- Total Pavers with 10% Waste: 1,350 * 1.10 = 1,485 Pavers
Applying the formula yields:
Total Patio Pavers Needed: 1,485 Pavers
Bedding Sand (1-inch Layer): 0.93 Cubic Yards
Crushed Gravel Base (4-inch Layer): 3.70 Cubic Yards
Polymeric Joint Sand Bags: 300 / 75 = 4 Bags (50 lb)
Estimated Material Cost: 1,485 * .35 = ,004.75
What This Calculator Includes vs. Does Not Include
What This Calculator Includes
- Backyard Patio Hardscaping: Measures 4x8 Holland stone, 6x6 square pavers, bedding sand, and sub-base gravel.
- Pattern-Specific Waste Multipliers: Accounts for diagonal cutting waste in herringbone layouts.
What This Calculator Does Not Include
- Patio Retaining Wall Edging: Vertical seat wall blocks.
Tips & Best Practices
- Lay Herringbone Patterns for High Furniture Traffic: 45-degree herringbone layouts distribute weight evenly and resist furniture leg shifting.
- Install Plastic Snap-Edge Restraints Along Perimeter: Secure patio edges with plastic paver edge restraints spiked with 10-inch steel spikes every 12 inches.
Common Mistakes to Avoid
- Forgetting to Pitch Patio for Drainage: Sloping patio 1/4 inch per foot away from house foundation prevents rainwater pool accumulation against house walls.
Frequently Asked Questions (FAQ)
How many pavers do I need for a 20x15 patio?
A 20x15 foot patio (300 sq ft) requires 1,350 standard 4x8 pavers (1,485 pavers with 10% waste).
How deep should a paver patio base be?
Excavate 7 to 8 inches deep: 4 inches crushed stone sub-base + 1 inch sand bed + 2-3/8 inch paver thickness.
How much sand do I need for a 300 sq ft patio?
A 300 sq ft patio requires 0.93 cubic yards of bedding sand (1 in layer) and 4 bags of 50lb polymeric joint sand.
Which paver pattern is strongest for patios?
45-degree herringbone pattern is the strongest paver pattern because interlocking corners prevent pavers from creeping.
How much does it cost to build a 20x15 paver patio?
Materials cost between ,800 and ,500; total installed cost ranges from ,500 to ,000 (-/sq ft).
Do I need landscape fabric under paver patio gravel?
Yes. Placing woven geotextile landscape fabric under the gravel base prevents sub-base stone from sinking into clay soil.
How many bags of polymeric sand per 100 sq ft of patio?
It takes approximately 1.5 to 2 bags of 50lb polymeric sand per 100 sq ft of paver patio.
How heavy is 1,500 concrete patio pavers?
1,500 concrete pavers weigh approximately 9,000 lbs (4.5 US short tons).
Is this patio paver calculator free to use?
Yes, TibCal's Patio Paver Calculator is 100% free.