Paver Calculator: Brick, Stone, Sand & Base Gravel Estimator
Use this paver calculator to estimate everything required to construct a durable interlocking paver patio, walkway, or driveway. This comprehensive calculator determines total paver stone counts, commercial pallets, crushed gravel sub-base volume, screeded bedding sand, and polymeric joint sand bags with precise cutting waste allowances.
Buy 991 pavers (~3 pallets), 2.80 cu yds of base gravel (4.10 tons), 0.62 cu yds of bedding sand, and 3 bags of polymeric sand.
| Patio / Walkway Area | 200 sq ft |
|---|---|
| Single Paver Size | 8" × 4" (4.50 per sq ft) |
| Cutting Waste Allowance | 10% |
| Total Pavers Needed | 991 units |
| Commercial Pallets (~105 sq ft) | 3 pallets |
| Crushed Stone Sub-Base (4") | 2.84 cu yds (4.12 tons) |
| Coarse Bedding Sand (1") | 0.62 cu yds (34 bags / 50-lb) |
| Polymeric Joint Sand | 3 bags (50-lb bags, ~85 sq ft/bag) |
📐 Show Formula and Default Assumptions
We believe all home improvement estimates should be transparent and verifiable. Below is the exact math running in this browser tool:
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Paver Unit Count Formula:
Pavers = ceil( (Total Area × (1 + (Waste % ÷ 100))) ÷ Paver Face Area )Calculates units from individual paver face dimensions with joint spacing and cut waste allowance. -
Crushed Stone Sub-Base Formula:
Base Cu Yds = (Total Area × (Base Depth in Inches ÷ 12)) ÷ 27 × 1.15Calculates 3/4" crushed road base volume with a mandatory 15% compaction allowance under plate tamping. -
Bedding Sand Volume Formula:
Bedding Sand Cu Yds = (Total Area × (1.0 Inch ÷ 12)) ÷ 27Standard uncompacted 1-inch bedding layer of ASTM C-33 coarse concrete sand. -
Polymeric Joint Sand Coverage:
Poly Sand Bags = ceil( Total Area ÷ 85 sq ft per 50-lb bag )Average manufacturer coverage for standard 2-3/8" thick pavers with 1/8" joints.
Note: All default assumptions (waste %, coverage rates, container yields) can be adjusted directly in the input fields above to match your project specifications.
How to Measure and Plan a Paver Patio or Walkway
- Stake the perimeter layout: Drive wood stakes 6 inches beyond the paver edge and run level mason lines with a line level to set 1/4" per foot drainage slope away from house foundations.
- Measure total square footage: Multiply length by width for rectangular patios; break curved patios into geometric sections.
- Select laying pattern and waste allowance: Simple running bond or stacked bond patterns require 8% to 10% waste; 45-degree herringbone or curved designs require 12% to 15% waste for perimeter angle cuts.
- Determine excavation depth: Total dig depth equals paver thickness (~2-3/8") + 1" sand bedding + 4" compacted gravel base for patios (or 6" to 8" base for driveways). Total dig is typically 7 to 8 inches below lawn grade.
- Install rigid commercial edge restraints: Secure paver perimeter with spiked plastic or aluminum paver edging every 12 inches into the compacted gravel base.
- Compact in stages: Compact subsoil, compact gravel base in 2-inch lifts with a vibratory plate compactor, screed loose sand, lay pavers, and plate compact after joint sand is swept in.
How the Paver Calculation Works (Worked Example)
Consider building a 200 sq ft patio using standard 4" × 8" Holland pavers (0.222 sq ft each) with 10% cutting waste, a 4" gravel base, and 1" bedding sand:
- 1. Paver Unit Face Area: 4 in × 8 in = 32 sq in ÷ 144 sq in/sq ft = 0.222 sq ft per paver (4.5 pavers/sq ft).
- 2. Calculate Total Pavers Needed: (200 sq ft × 1.10) ÷ 0.222 sq ft = 991 pavers.
- 3. Pallet Estimate (~100 sq ft/pallet): 220 sq ft ÷ 100 = 2.2 -> Order 3 full pallets (or approx 1,000 loose units).
- 4. Crushed Stone Base (4" thick with 15% compaction): 200 × (4/12) ÷ 27 × 1.15 = 2.84 cu yds (approx 4.0 tons).
- 5. Bedding Sand (1" thick screeded): 200 × (1/12) ÷ 27 = 0.62 cu yds (approx 0.85 tons or 34 fifty-pound bags).
- 6. Polymeric Joint Sand: 200 sq ft ÷ 85 sq ft/bag = 2.35 -> Round UP to 3 fifty-pound bags.
- 7. Edge Restraint: 2 × (Length + Width) minus house contact linear feet for edge edging strips and 10" steel spikes.
Standard Paver Sizes, Unit Coverage & Base Requirements
| Paver Dimensions | Pavers per Sq Ft | Units per 100 Sq Ft | Recommended Base (Patio) | Recommended Base (Driveway) |
|---|---|---|---|---|
| 4" × 8" Standard Brick | 4.50 units | 450 units | 4" Compacted crushed stone | 8"–10" Compacted crushed stone |
| 6" × 6" Square | 4.00 units | 400 units | 4" Compacted crushed stone | 8" Compacted crushed stone |
| 6" × 9" Large Rectangle | 2.67 units | 267 units | 4" Compacted crushed stone | 8" Compacted crushed stone |
| 12" × 12" Architectural | 1.00 unit | 100 units | 4"–6" Compacted stone | Not recommended for driveways |
| 16" × 16" Stepping Stone | 0.56 units | 56 units | 4" Compacted stone | Pedestrian footpaths only |
Frequently Asked Questions About Paver Calculator
How thick should the base be for a paver patio versus a driveway?
For pedestrian patios and walkways, a minimum 4-inch layer of compacted 3/4" minus crushed stone base is standard. For vehicular driveways, increase the base depth to 8 to 12 inches compacted in 2-inch lifts to prevent tire rutting.
Why do I need polymeric sand instead of regular joint sand?
Polymeric sand contains specialized polymers that activate when misted with water, hardening into an elastomeric grout line. This locks pavers tightly together, prevents ants from digging, and stops weed seeds from sprouting between joints.
How many pavers are on a standard pallet?
Pallet counts vary by manufacturer and paver thickness, but a full pallet typically contains 100 to 120 square feet of pavers. For standard 4" × 8" pavers, a pallet holds between 480 and 540 units and weighs 2,800 to 3,200 pounds.
What is the best laying pattern to prevent paver shifting?
The 45-degree or 90-degree herringbone pattern provides the highest mechanical interlock because vertical and horizontal forces are distributed equally across neighboring stones, making it the premier choice for driveways and high-traffic patios.
Should I compact the sand bedding before putting pavers down?
No. Bedding sand must be screeded flat and left loose. When you place pavers on the loose sand and run a plate compactor over the top after installing joint sand, sand pushes up slightly into the joints from below, locking the stones in place.