What actually holds a paved area flat?

The compacted sub-base, not the pavers. A paved surface is a flexible system in which the base spreads the load and the pavers wear; a thin base under good pavers settles and ruts, while a deep well-compacted base under modest pavers stays flat for decades. The base is also the larger quantity, and it is where the cost sits.

Why does edge restraint matter?

Because the field is only held together by friction in the joints, and that friction depends on the pavers being pressed against each other. Without a restraint at the perimeter the outer course creeps outward under traffic, the joints open, jointing sand washes out, and the failure works inward from the edge. It is a small item guarding the whole area.

Should the bedding layer be thick?

No — and thickening it is a common mistake. The bedding sand is a thin, uniform screed whose only job is to accommodate the small dimensional variation between pavers. Made thick, it behaves as a soft layer that consolidates unevenly under load, and the surface ruts along the wheel tracks. Depth belongs in the sub-base.

How much cutting waste should I allow?

About 10% for a simple rectangular layout, the page's default, and more for curved edges or a herringbone or diagonal pattern: the shape decides it, not the area. A rectangular field with a running bond wastes little because the offcut from one course starts the next. A circular, curved or diagonally laid area cuts every perimeter unit at an angle and reuses almost none of it — and a herringbone pattern cuts every edge unit regardless of the shape.

Materials & Quantities

Paver Calculator

Estimate how many pavers you need for a patio or walkway, based on paver size and area.

Answers as you typeNo submit button
Every formula citedNamed published standards
Calculated in your browserNo account, nothing uploaded

SettingsSettings for this calculationUS

Market

Imperial · sales tax

Who is doing the work?

The standard allowance most suppliers and estimating guides assume for ordinary work.

Patio Length

The length of the area to be paved.

Measure the overall length of the patio, walkway, or path.

Tools needed: Tape measure, Stakes and string for marking the layout

Patio Width

The width of the area to be paved.

Measure perpendicular to the length.

Tools needed: Tape measure

Area Left Unpaved

Any part of the rectangle that is not paved — a pool, a planting bed, a tree pit. Leave it at 0 for a plain rectangle.

Measure the length and width above across the whole outside edge, then enter here what sits inside it unpaved: for a pool surround, the pool's length times its width, plus the coping band if the coping is bought separately. It comes off before the count, so the waste allowance is applied to the paving only.

Paver Length

The length of a single paver.

Common sizes are 12x12 in (30x30 cm), 16x16 in (40x40 cm), and 6x9 in (15x23 cm) — check your specific product.

Paver Width

The width of a single paver.

Measure the actual paver, not the nominal size, for the most accurate count.

Waste Factor (%)

Extra pavers for edge cuts, curves, and breakage.

10% is standard for a simple rectangular layout. Use more for curved edges or a herringbone/diagonal pattern.

Estimated paver needed

143 pavers

High confidence

The pavers are the visible tenth of the job. What determines whether they stay flat is the base beneath them and the edge restraint around them, and both are larger quantities than the surface.

Patio area: 130 sq ft
Coverage per paver: 1 sq ft

Then change the inputs to see how far the answer moves.

Show calculation logic

How this was calculated

Formula source(s)

Paver count = area to cover / (paver length x paver width), rounded up with a waste allowance for cuts along edges and curves

Inputs used

Patio Length: 13 ft
Patio Width: 10 ft
Area Left Unpaved: 0 sq ft
Paver Length: 12 in
Paver Width: 12 in
Waste Factor (%): 10

Intermediate steps

Patio area: 130 sq ft
Coverage per paver: 1 sq ft

Final result143 pavers

Confidence note: The pavers are the visible tenth of the job. What determines whether they stay flat is the base beneath them and the edge restraint around them, and both are larger quantities than the surface.

What this calculation does not cover

Excludes the sub-base, bedding layer and jointing sand, each of which has its own depth and its own compaction allowance.
Excludes the edge restraint, without which the field spreads laterally under traffic and the joints open.
Does not model cutting waste on a curved or angled layout, which is far higher than on a rectangular field.

Estimated cost — your price

Price per paver ($)

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Part of bigger jobs

This trade is one line of several job takeoffs. Run the whole job and every other trade comes back with it, off the same measurements.

Or plan the space itself: measure it once, doors and windows included, and this figure comes back worked out on that space, with what goes with it.

Driveway planner

Paver patio Check a quote
also measuresPaver Base & Sand Paver Edging Paver Polymeric Sand Paver Sealer
Pool surround Check a quote
also measuresPool Volume (Rectangular, Round, Oval or Kidney)Pool Cover & Liner Area Paver Edging

Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.

Sources checked 2026-09-25 · v1.1.0

Regulatory standards & verification citations1

Paver count = area to cover / (paver length x paver width), rounded up with a waste allowance for cuts along edges and curves

Cite this page

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Tools and safety for this job

To lay paving. Generic types, no brands, no prices.

Protection this work requires

Cutting or grinding concrete, masonry, screed, tile or fibre-cement board releases respirable silica: cut wet or extract at the tool, and wear a P2/N95 respirator at minimum — a nuisance dust mask does not filter it.
Saws, grinders and breakers run above 85 dB, where hearing damage accumulates and does not recover: defenders or plugs for every cut, not just the long ones.
Breakers and grinders cause permanent nerve damage: limit continuous trigger time, keep hands warm, and stop if fingers tingle or blanch.
Boards, blocks and bagged material cause most lasting back injuries on small sites: two people or a lifter for full sheets, and never a bag on one shoulder up a ladder.

Show the 8 tools this job needs

Essential

Plate compactor
Rubber mallet
Shovel and spade
Spirit level
String line and pins
Wheelbarrow

Recommended

Block splitter

Optional

Angle grinder

Also needed as materials: cutting and diamond discs.

what each landscaping tool is for, and the spec that decides which to buy where one does.

Paver setting-out grid — drawn from your figures

A 3.96 x 3.05 m patio set out in 0.3 x 0.3 m pavers, stack bond.

A DXF plan in metres. Opens in AutoCAD, LibreCAD, QCAD and most jobsite viewers.

What this drawing does not show (3)

The bond. This is drawn as a stack bond because the calculator counts by AREA and assumes no pattern — running bond, herringbone and basketweave all cover the same area and change only the cuts.
Joint width and edge restraint.
Where the cuts fall, which depends on which corner you start from.

It is a setting-out aid drawn from the figures you entered, not a construction drawing, and nobody has checked it against a design.

Now that you have the number

These guides cover the work this quantity is for — the first ones run this calculator inside the section that raises the question.

Building Steps Into a Garden Slopeuses this calculator
Dividing an awkward bank into equal risers, matching the going to the ground you actually have, and laying every tread to a fall so it drains instead of icing.
Getting a Dropped Kerb Built and Paved to Meet Ituses this calculator
Forty square metres of new block paving with no lawful way onto it: proving the frontage is deep enough, who may cut the kerb, and meeting the channel.
Laying a Patio Against the House Without Bridging the DPCuses this calculator
Two courses of brick between the ground and the damp course, and a back door that wants to be flush: the three ways that gets resolved.

Called something else where you work? Paving flags, slabs and pavers — the term in each market, how close the equivalence really is, and the standard that governs it.

Still deciding? Concrete Slab vs Pavers · Deck vs Paver Patio — the factors that actually differ, with no invented prices.

Already have some? How big a patio will my pavers make?

Worked examples: Gravel driveway — step 7 of 8 · Paver patio — step 7 of 10

The data behind it: Production rates by operation

How to calculate paver in 7 steps

Patio LengthThe length of the area to be paved.
Patio WidthThe width of the area to be paved.
Area Left UnpavedAny part of the rectangle that is not paved — a pool, a planting bed, a tree pit. Leave it at 0 for a plain rectangle.
Paver LengthThe length of a single paver.
Paver WidthThe width of a single paver.
Waste Factor (%)Extra pavers for edge cuts, curves, and breakage.
Read the resultThe tool computes the result from those figures and shows the formula, its sources, and a confidence rating alongside it.

Estimated paver needed by patio length

Page defaults, not your figures above.

Patio Length	pavers
10 ft	109
15 ft	163
20 ft	217
25 ft	271

Frequently asked questions

What actually holds a paved area flat?: The compacted sub-base, not the pavers. A paved surface is a flexible system in which the base spreads the load and the pavers wear; a thin base under good pavers settles and ruts, while a deep well-compacted base under modest pavers stays flat for decades. The base is also the larger quantity, and it is where the cost sits.
Why does edge restraint matter?: Because the field is only held together by friction in the joints, and that friction depends on the pavers being pressed against each other. Without a restraint at the perimeter the outer course creeps outward under traffic, the joints open, jointing sand washes out, and the failure works inward from the edge. It is a small item guarding the whole area.
Should the bedding layer be thick?: No — and thickening it is a common mistake. The bedding sand is a thin, uniform screed whose only job is to accommodate the small dimensional variation between pavers. Made thick, it behaves as a soft layer that consolidates unevenly under load, and the surface ruts along the wheel tracks. Depth belongs in the sub-base.
How much cutting waste should I allow?: About 10% for a simple rectangular layout, the page's default, and more for curved edges or a herringbone or diagonal pattern: the shape decides it, not the area. A rectangular field with a running bond wastes little because the offcut from one course starts the next. A circular, curved or diagonally laid area cuts every perimeter unit at an angle and reuses almost none of it — and a herringbone pattern cuts every edge unit regardless of the shape.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — a confirmed fix gets a permanent check of its own, so the same mistake cannot come back.