80×80 cm Tile Calculator & Layout Planner

Enter your room dimensions in Step 1 to generate a customized 80×80 cm layout with precise cut calculations and carton estimates in Step 2.

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Coverage & Packaging Reference (80 × 80 cm)

Calculated with standard cartons of 3 tiles per box (1.92 m²/box) and 10% cutting allowance.

Room Area (m²)	Net Tiles	Total (+10% Waste)	Boxes to Buy	Purchased Area (m²)
5 m²	8 tiles	9 tiles	3 boxes	5.76 m²
10 m²	16 tiles	18 tiles	6 boxes	11.52 m²
15 m²	24 tiles	27 tiles	9 boxes	17.28 m²
20 m²	32 tiles	36 tiles	12 boxes	23.04 m²
25 m²	40 tiles	44 tiles	15 boxes	28.8 m²
30 m²	47 tiles	52 tiles	18 boxes	34.56 m²

Attic Stock Recommendation: Trade practice recommends ordering 1 extra unopened box (1.92 m²) to protect against future pipe repairs and dye lot color shifts.

Craftsman Trade Advice

Essential technical rules from master tilers for durable tile installations.

Substrate Prep

Rigid Subfloor Prep & Heavy Bedding Mortar

Heavy 80×80 cm porcelain slabs demand a completely rigid, level subfloor. Apply a 12 mm notched trowel with the back-buttering technique to achieve 100% void-free mortar contact and prevent cracked corners.

Sightline

Centering Large Grids Across Main Living Axials

Snap chalk lines through the room center so edge cuts along opposite walls are wider than 40 cm. Narrow cut slivers look disproportionate with 80 cm slabs and compromise structural edge stability.

Joint Physics

Mechanical Leveling Clips & Expansion Gaps

Use tile leveling clips at slab corners to hold tile faces flush while mortar cures. Maintain an 8 mm perimeter silicone expansion joint along all baseboards to accommodate thermal slab expansion.

Frequently Asked Questions

How many 80×80 cm tiles are in one square meter?

There are exactly 1.56 tiles of 80×80 cm in one square meter without joints. Factoring in a 2 mm joint and standard 10% cutting waste, plan for approximately 1.75 tiles per square meter.

Can 80×80 cm tiles be laid in a 50% brick bond pattern?

No, 80×80 cm tiles should not be laid in a 50% brick bond pattern. Due to kiln center crowning, a 50% offset aligns highest midpoints with corners, causing noticeable lippage. Use a straight grid stack instead.

What grout joint width should I use for 80×80 cm tiles?

Rectified 80×80 cm porcelain tiles require a clean 2 mm to 3 mm grout joint width. A 2 mm joint provides enough space for grout compaction while maintaining a modern, expansive floor appearance.

Are 80×80 cm tiles suitable for floors or walls?

Dense 80×80 cm tiles are primarily engineered for residential and commercial floors. While they can be installed on walls, their heavy weight requires specialized high-polymer adhesive and reinforced substrates.

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