Home & Construction

Paver & Patio Calculator

Updated Aug 24, 2026 Reviewed Aug 24, 2026

Estimate pavers, packs, compacted base, bedding, joint-sand bags, edge restraint, allowances, and optional component costs.

Pavers, supporting layers, and edges

Enter paved areas and product specifications

Area 1

Area name

Area shape

Length

Width

Measurement unit

Paver and joint settings

Paver length

Paver width

Paver dimension unit

Joint width

Joint-width unit

Paver waste (%)

Pieces per pack

Optional; leave empty when sold individually.

Base, bedding, and joint sand

Compacted base depth

Bedding depth

Layer-depth unit

Loose-base compaction allowance (%)

Extra loose base used to reach the planned compacted layer.

Joint-sand coverage per bag

Use package coverage for this paver and joint.

Coverage area unit

Include edge restraint

Uses the entered open perimeter of every area.

Edge allowance (%)

Result area unit

Result volume unit

Result length unit

Optional component prices

Currency

Price per paver

Base price per result volume unit

Bedding price per result volume unit

Price per joint-sand bag

Edge price per result length unit

Preliminary material takeoff

Enter layer depths from an approved plan. Soil, drainage, loads, climate, pattern, borders, and cuts can change quantities.

Result

Calculation summary

Enter values to see the result

Your result, breakdown, assumptions, and warnings will appear here.

Paving assembly preview

Pavers, bedding, and compacted base

Live preview

Pavers, base, bedding, joint sand, and edges remain separate quantities.

How to use this calculator

1Add each paved area and its open perimeter.
2Enter actual paver, joint, base, and bedding dimensions.
3Replace joint-sand coverage and prices with supplier data.

Formula

Pavers = ceil(area ÷ module area × (1 + waste)); base = area × depth × (1 + compaction)

Unit count uses the paver-plus-joint module; layers are calculated separately.

Calculation steps

Sum areas and perimeters.
Calculate pavers and waste.
Calculate base and bedding volumes.
Round bags and packs upward.
Total entered prices.

Worked example

A 20 m² patio with 20 cm × 10 cm pavers, 3 mm joints, 10% waste, 15 cm base, and 2.5 cm bedding creates separate quantities.

Assumptions

Pattern and cuts affect count.
Layer depths come from the plan.
Compaction is user-entered.
Joint sand uses package coverage.
Shared edges must be removed from perimeter.

Sources

Frequently asked questions

Why add waste?

It covers project-specific cuts, breakage, pattern effects, and spares.

Does this choose base depth?

No. Enter an approved project depth.

Why enter joint-sand coverage?

Density, chamfers, width, and depth vary; package coverage is more reliable.

Can it estimate a curved patio?

Yes for preliminary area and volume, but layout cuts need a takeoff.

Does cost include labor?

No. It totals entered material prices only.

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