Patio Paver Calculator

Calculate pavers, sand, gravel & cost for your patio — get a full shopping list in seconds.

Patio Dimensions

Patio Length (ft)

Enter a valid length (1–500 ft)

Patio Width (ft)

Enter a valid width (1–500 ft)

Paver Size

Paver Length (in)

Enter 1–72 inches

Paver Width (in)

Enter 1–72 inches

Joint Gap Size (in)

Typical joint: 0.25 in for concrete pavers, 0.5 in for natural stone

Pattern & Base

Laying Pattern

+0% waste — efficient, most common. Cuts only at edges.

Bedding Sand Depth (in)

Recommended: 1 inch

Gravel Base Depth (in)

4 in residential, 6 in for vehicles

Paver Cost ($ per unit, optional)

Leave blank to use regional averages ($1.20–$3.00 each)

Project Overview

Materials Breakdown

🛒 Shopping List

⏱ Time Estimate

💰 Cost Estimate

How to Use This Patio Paver Calculator

Enter your patio's length and width in feet, then choose your paver dimensions in inches. Pick a laying pattern (this affects how much waste to expect), set your base depths, and hit Calculate My Patio. You'll instantly get the number of pavers needed, cubic yards of sand and gravel, a full shopping list with quantities, and a cost estimate.

All results include a recommended 10–15% overage buffer depending on your selected pattern — so you don't have to make a second trip to the store.

Why This Matters

Buying too few pavers is the #1 DIY patio mistake. You'll end up with a half-finished job while waiting for a reorder — and if the batch has since changed, you may get a slightly different color that doesn't match. Buying too many isn't ideal either, but leftover pavers make great stepping stones or a future fire pit pad.

The base layers — compacted gravel and bedding sand — are just as important as the pavers themselves. Skimping on the gravel base is why patios sink and shift after just one winter. A proper 4-inch gravel base with 1 inch of bedding sand is the industry standard for foot-traffic patios. For driveways or areas with vehicle access, go 6 inches of gravel minimum.

Cost estimates vary widely by region, but nationally pavers range from $1.20 (basic concrete) to $8+ (premium natural stone). This tool uses a mid-range average so you can budget realistically before heading to a home improvement store.

How It's Calculated

The core calculation is simple: Patio Area ÷ Single Paver Area = Pavers Needed. The paver area accounts for the joint gap added to each side. Pattern waste is then added on top:

Running Bond / Stack Bond: +10% waste
Basket Weave: +12% waste
Herringbone 45°: +15% waste (diagonal cuts create more offcuts)

Sand volume: Patio Area (sq ft) × Sand Depth (ft) ÷ 27 = Cubic Yards

Gravel volume: Patio Area (sq ft) × Gravel Depth (ft) ÷ 27 = Cubic Yards

Joint sand (polymeric): estimated at 50 lbs per 100 sq ft of patio area.

Tips & Common Mistakes

Always add overage: Our calculator includes it, but if you're ordering custom or natural stone, add an extra 5% on top just in case.
Compact your base: Gravel must be compacted in 2-inch lifts with a plate compactor — don't just dump 4 inches and hope for the best.
Slope for drainage: Pitch your patio 1/8 inch per foot away from your house. This calculator doesn't adjust for slope — add a few extra pavers if cutting for grade.
Use polymeric sand for joints: Regular sand washes out. Polymeric sand hardens when wet and resists weeds and ants much better.
Rent, don't buy, a plate compactor: You'll use it once. Most equipment rental shops charge $60–$90/day.

Frequently Asked Questions

How many pavers do I need for a 12×12 patio?

A 12×12 ft patio (144 sq ft) using standard 12×6 inch pavers with a 0.25-inch joint requires approximately 168 pavers including a 10% waste buffer. Use this calculator with your exact paver size to get a precise number. Always round up to the nearest full pallet.

Should I use sand or concrete under pavers?

Bedding sand is the standard for most residential patios — it allows for minor adjustment during installation and provides drainage. Concrete is sometimes used for mortar-set applications (like pool coping), but for standard ground-level patios, a compacted gravel base plus 1 inch of coarse bedding sand is the correct approach.

What's the difference between running bond and herringbone patterns?

Running bond is like typical brick wall laying — rows offset by half a paver. It's efficient (less waste) and straightforward to install. Herringbone is laid at 45-degree angles and creates a classic interlocking look — it's more stable under heavy traffic but requires more angled cuts, hence more waste (about 15%).

How deep should the gravel base be?

For foot-traffic patios, 4 inches of compacted crushed gravel is standard. If the patio will support vehicles, go 6 inches minimum. In areas with heavy freeze-thaw cycles, some contractors recommend going up to 8 inches to prevent frost heaving. Always compact in 2-inch lifts.

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