Does a larger tile mean fewer tiles and less cost?

Fewer pieces yes, fewer grout lines to mop in five years yes — but here is what nobody tells you upfront: large-format tiles (24x24 inch or bigger) are brutal on uneven sub-floors. Bumps you would never notice under a 12x12 tile show up as visible lippage on a 24x48. Labour goes up because each tile is a two-person lift, and the layout has to be perfect or the corner offcuts get ugly. Bigger tiles also cost more per square foot. Calculate carefully — the saving on count is not always a saving on the bill.

How much extra should I allow for a diagonal or herringbone layout?

Straight grid: 10 percent and you are safe. Diagonal: bump it to 12 to 15 percent because every cut at the wall produces a triangular offcut you usually cannot reuse. Herringbone or chevron: budget 15 to 20 percent — the pattern alone wastes more, and the visual price of mismatched cuts is much higher. Mosaics or random-mix patterns: 20 to 25 percent. Honest take: when in doubt, order one full extra box from the same batch. It costs less than a second site visit.

Do I need to account for grout lines in the calculation?

For thin grout joints (2 to 3 mm — what rectified-edge tiles need to look right), the area is negligible and you can ignore it. For thicker 5 mm or 6 mm joints (common with rustic, terracotta, or brick-pattern tile), the grout takes up enough surface that your tile count drops by 2 to 3 percent. On a small bathroom this disappears in the wastage allowance anyway. On a 1,500 sq ft floor it matters — and so does the grout volume, which doubles when you go from 3 mm to 6 mm joints.

Should I keep extra tiles after installation?

Always. Keep 5 to 10 spare tiles in a dry place, ideally still in the original box with the batch number visible. Pakistani tile manufacturers rotate dye-lots every few months, and even the same product code from the same brand will arrive in a noticeably different shade six months later. For imported or premium tiles, double the reserve — replacement stock often disappears from the local market within a year.

How do I calculate for a shower or niche?

Treat every surface as its own little tiling job. Each shower wall is length times height. The ceiling, if you are tiling it, is its own rectangle. The floor with its drain slope is another. Each niche has three or five inside surfaces — measure them individually and add them in. Then add bullnose or pencil-edge trim wherever a tile edge will be visible — those special pieces are sold separately and people forget them until the tiler is already on site.

What if my room is not a simple rectangle?

Split the floor mentally into clean rectangles, calculate each rectangle's tile count separately, sum them, then apply the wastage percentage to the total. If you have an L-shape or a small alcove, this works perfectly. For curved walls, hexagonal patterns, or seriously odd shapes, bump wastage up to 20 percent because every weird cut you make is a tile you cannot reuse. For expensive natural stone, get a professional tiler to lay it out on paper before you place the order.

Does the tile thickness or edge type matter for count?

Not for the count itself, but it matters everywhere else. Rectified tiles (sharp factory-cut 90-degree edges) let you use 2 mm grout joints for a crisp modern look — but they are unforgiving of any wonkiness in the sub-floor. Beveled-edge tiles need 3 to 5 mm joints and hide minor imperfections better. Thicker tiles (10 mm versus 8 mm) need transition strips at doorways where they meet other flooring, and those strips add cost most people forget to quote.

Premium Converters

Tile Calculator

Construction

Work out tile quantity for floors, walls, showers and backsplashes in sq ft or sq m, with adjustable wastage allowance for straight, diagonal and herringbone layouts.

Construction

Tile Calculator

Generated on May 23, 2026

Room Dimensions (feet)

Width (ft)

Length (ft)

Tile Size (inches)

Width (in)

Length (in)

Waste %

Quick Answer

Work out tile quantity for floors, walls, showers and backsplashes in sq ft or sq m, with adjustable wastage allowance for straight, diagonal and herringbone layouts.

Overview — Tile Calculator

Construction

A tile calculator tells you exactly how many tiles you need for a floor, wall, or any rectangular surface, based on your room dimensions and the size of the tile you plan to use. It includes a customizable waste percentage to account for cutting losses at edges, breakage during handling, and spare tiles to keep on hand for future repair. This is indispensable for homeowners planning a kitchen or bathroom refresh, contractors preparing quotes, and DIYers avoiding the disaster of running out of tile mid-installation — especially when the original dye lot is no longer in stock.

Formula

Tiles = Ceil(Room Area ÷ Tile Area) × (1 + Waste%). Both areas must be in the same unit.

Standard 12×12 in tile covers 1 sq ft; you need roughly 1 tile per sq ft plus 10% waste.

Diagonal layout adds 2–5% more waste; herringbone adds 5–10%; complex mosaics 15–25%.

Keep 5–10 spare tiles after installation — dye lots change, matching replacements can be impossible later.

By Muhammad Salman SaleemUpdated: May 23, 2026MethodologyFree, no sign-upRuns in your browser — your data stays private

From the editors — what to know before you start

The number you really need before calling a tile supplier is not the floor area — it is the floor area plus the right amount of wastage, because cutting tiles for corners, plumbing cutouts, and the inevitable hairline crack on a delivery truck means you will always use more than the room measures. Standard wastage is 10 percent for straight grid layouts and 15 percent for diagonal or herringbone, but most first-timers forget that AND forget that tiles ship in dye-lot batches — order short, go back next month, and the new box will be a visibly different shade in good light. Calculate full area plus wastage plus one spare box, all from the same batch, all delivered together. The other quiet trap is grout: 6 mm joints look modern but use 50 percent more grout than 3 mm joints, and rectified-edge tiles need the narrower joint to look right. Run your tile dimensions through here and you will get tile count, full boxes to order (rounded up), and a sense of how much grout you will burn through. Saves you a second supplier trip mid-project — which in Karachi or Lahore traffic is half a day gone.

Pro tips most people learn the hard way

Always order from a single dye-lot. Pakistani tile factories shift colour batches every couple of months, and a top-up box ordered six months later will land in a noticeably different shade — visible to anyone with daylight in the room. Buy one extra full box upfront from the same batch, store it sealed, and that is your insurance policy for the next decade.
Wastage is not optional. 10 percent for straight grid layouts, 15 percent for diagonal or herringbone, 20 percent plus for mosaics or natural stone. Cuts at walls, plumbing cutouts, and breakage during handling all eat into your count. Underordering by even 5 percent triggers a second supplier visit and a dye-lot mismatch you will regret.
Large-format tiles (24x24 or bigger) look spectacular but need a dead-flat substrate. Pakistani sub-floors are rarely level enough out of the box — budget for self-levelling compound or you will see lippage at every joint. Smaller tiles forgive imperfect floors; big tiles expose them.
Rectified tiles want 2 to 3 mm grout joints for the crisp modern look. Beveled-edge tiles need 4 to 6 mm. Mixing the two wrong way around (rectified with wide joints, beveled with thin) makes the whole floor look amateur. Pick the joint width before you finalise the tile choice.
Do not forget bullnose, pencil-trim, or skirting pieces. Anywhere a tile edge will be visible — countertop fronts, niche openings, the top of a half-tiled wall — needs a finished edge piece. These are sold separately, often in fewer quantities, and tilers always ask for them on day one when you have not ordered any.

?What is the Tile Calculator?

The Formula

Tiles = Ceil(Room Area ÷ Tile Area) × (1 + Waste%). Both areas must be in the same unit.

Both the room area and the tile area must be expressed in matching units — most commonly square feet, or convert tile inches² to ft² by dividing by 144. The result is rounded up with the ceiling function because partial tiles cannot be purchased. The waste factor (typically 10%, sometimes 15% for complex patterns or 20% for herringbone) covers edge cuts around walls and plumbing fixtures, breakage from handling and cutting, and crucially, a small reserve of spare tiles to keep for repairs years later when the original dye lot may no longer be manufactured.

Tile Quantity Reference — By Room Size & Tile Size (10% waste included)

Approximate number of tiles needed for common rooms and tile sizes. Always add extra for cuts, patterns, and spares.

Room (sq ft)	12×12 in Tiles	16×16 in Tiles	24×24 in Tiles	6×24 in Planks
50	55	31	14	56
100	110	62	28	110
150	165	93	42	165
200	220	124	55	220
300	330	186	83	330
500	550	310	138	550
1000	1,100	620	275	1,100

Put It in Perspective

Standard 12×12 in tile covers 1 sq ft; you need roughly 1 tile per sq ft plus 10% waste.

Diagonal layout adds 2–5% more waste; herringbone adds 5–10%; complex mosaics 15–25%.

Keep 5–10 spare tiles after installation — dye lots change, matching replacements can be impossible later.

A typical Pakistani bathroom (7×10 ft = 70 sq ft) needs ~77 standard 12×12 in tiles.

Practical Examples

A 10 × 12 ft room using 12 × 24 inch tiles with 10% waste needs 60 base tiles and 66 total after waste — a manageable kitchen or bedroom floor.

A 6 × 8 ft bathroom with 8 × 8 inch tiles needs 108 base tiles, or 119 with 10% waste — the standard full-bath quantity.

Larger tiles (24 × 24 inch) produce noticeably less waste than small tiles (6 × 6 inch) because they require fewer cuts around edges and obstacles.

A diagonal layout typically adds 5% more waste than a straight layout because the corner cuts produce smaller unusable offcuts.

Shower walls, backsplashes, and feature niches should each be calculated separately and summed — many first-timers forget vertical surfaces.

For an expensive natural-stone tile, consider ordering 15% waste even on straight layouts, because replacement tiles from a new batch may not match in color or veining.

Frequently Asked Questions

Three things are working against you. Tiles break — during cutting, during handling, sometimes just sliding off the truck on a Karachi pothole. Edge cuts around walls, plumbing cutouts, and door jambs always produce scrap nobody can reuse. And critically, you want 3 to 5 spare tiles stashed in the storeroom for the day a guest drops a heavy pot or a hairline crack opens up — because by then the original dye-lot has been off the shelf for two years and the closest match will look obviously wrong in daylight. Plan 10 percent for plain grid layouts, 15 percent the moment you go diagonal or patterned.

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Premium Converters

Tile Calculator

Construction

Work out tile quantity for floors, walls, showers and backsplashes in sq ft or sq m, with adjustable wastage allowance for straight, diagonal and herringbone layouts.

Construction

Tile Calculator

Generated on May 23, 2026

Room Dimensions (feet)

Width (ft)

Length (ft)

Tile Size (inches)

Width (in)

Length (in)

Waste %

Quick Answer

Work out tile quantity for floors, walls, showers and backsplashes in sq ft or sq m, with adjustable wastage allowance for straight, diagonal and herringbone layouts.

Overview — Tile Calculator

Construction

Formula

Tiles = Ceil(Room Area ÷ Tile Area) × (1 + Waste%). Both areas must be in the same unit.

Standard 12×12 in tile covers 1 sq ft; you need roughly 1 tile per sq ft plus 10% waste.

Diagonal layout adds 2–5% more waste; herringbone adds 5–10%; complex mosaics 15–25%.

Keep 5–10 spare tiles after installation — dye lots change, matching replacements can be impossible later.

By Muhammad Salman SaleemUpdated: May 23, 2026MethodologyFree, no sign-upRuns in your browser — your data stays private

From the editors — what to know before you start

Pro tips most people learn the hard way

Always order from a single dye-lot. Pakistani tile factories shift colour batches every couple of months, and a top-up box ordered six months later will land in a noticeably different shade — visible to anyone with daylight in the room. Buy one extra full box upfront from the same batch, store it sealed, and that is your insurance policy for the next decade.
Wastage is not optional. 10 percent for straight grid layouts, 15 percent for diagonal or herringbone, 20 percent plus for mosaics or natural stone. Cuts at walls, plumbing cutouts, and breakage during handling all eat into your count. Underordering by even 5 percent triggers a second supplier visit and a dye-lot mismatch you will regret.
Large-format tiles (24x24 or bigger) look spectacular but need a dead-flat substrate. Pakistani sub-floors are rarely level enough out of the box — budget for self-levelling compound or you will see lippage at every joint. Smaller tiles forgive imperfect floors; big tiles expose them.
Rectified tiles want 2 to 3 mm grout joints for the crisp modern look. Beveled-edge tiles need 4 to 6 mm. Mixing the two wrong way around (rectified with wide joints, beveled with thin) makes the whole floor look amateur. Pick the joint width before you finalise the tile choice.
Do not forget bullnose, pencil-trim, or skirting pieces. Anywhere a tile edge will be visible — countertop fronts, niche openings, the top of a half-tiled wall — needs a finished edge piece. These are sold separately, often in fewer quantities, and tilers always ask for them on day one when you have not ordered any.

?What is the Tile Calculator?

The Formula

Tiles = Ceil(Room Area ÷ Tile Area) × (1 + Waste%). Both areas must be in the same unit.

Tile Quantity Reference — By Room Size & Tile Size (10% waste included)

Approximate number of tiles needed for common rooms and tile sizes. Always add extra for cuts, patterns, and spares.

Room (sq ft)	12×12 in Tiles	16×16 in Tiles	24×24 in Tiles	6×24 in Planks
50	55	31	14	56
100	110	62	28	110
150	165	93	42	165
200	220	124	55	220
300	330	186	83	330
500	550	310	138	550
1000	1,100	620	275	1,100

Put It in Perspective

Standard 12×12 in tile covers 1 sq ft; you need roughly 1 tile per sq ft plus 10% waste.

Diagonal layout adds 2–5% more waste; herringbone adds 5–10%; complex mosaics 15–25%.

Keep 5–10 spare tiles after installation — dye lots change, matching replacements can be impossible later.

A typical Pakistani bathroom (7×10 ft = 70 sq ft) needs ~77 standard 12×12 in tiles.

Practical Examples

A 10 × 12 ft room using 12 × 24 inch tiles with 10% waste needs 60 base tiles and 66 total after waste — a manageable kitchen or bedroom floor.

A 6 × 8 ft bathroom with 8 × 8 inch tiles needs 108 base tiles, or 119 with 10% waste — the standard full-bath quantity.

Larger tiles (24 × 24 inch) produce noticeably less waste than small tiles (6 × 6 inch) because they require fewer cuts around edges and obstacles.

A diagonal layout typically adds 5% more waste than a straight layout because the corner cuts produce smaller unusable offcuts.

Shower walls, backsplashes, and feature niches should each be calculated separately and summed — many first-timers forget vertical surfaces.

For an expensive natural-stone tile, consider ordering 15% waste even on straight layouts, because replacement tiles from a new batch may not match in color or veining.

Frequently Asked Questions

Popular Conversions

Jump to a ready-made conversion — useful for quick reference and sharing:

Browse all Construction

Paint Calculator

Estimate paint in litres or gallons from room dimensions, coats and coverage, subtracting doors and windows — works for interior emulsion and exterior weather coats.

Concrete Calculator

Compute cement bags, sand and aggregate in m3 for slabs, footings, beams and columns using M15, M20 or M25 mix ratios with the 1.54 dry-volume factor.

Brick Calculator

Estimate bricks, mortar, cement bags and sand for a single wall or a 4-wall plot. Supports 22 brick & block standards, ft+in or metric input, openings deduction, and 2D + 3D visualizations.

Square Footage Calculator

Calculate area from length and width and convert square feet to square metres, square yards, acres, Marla and Kanal for property, flooring and material estimates.

Plot Area Calculator (4-Sided)

Calculate plot area from four sides (North, South, East, West) in Marla, Kanal, and Acres.

Plot Area Calculator (3-Sided / Triangular)

Calculate the exact area of a triangular plot from three side lengths using Heron's formula. Marla, Kanal, Acre.

Plot Area Calculator (5-Sided / Pentagonal)

Estimate the area of a 5-sided pentagonal plot from its five side lengths. Cyclic-polygon method.

Plot Area Calculator (6-Sided / Hexagonal)

Estimate the area of a 6-sided hexagonal plot from its six side lengths. Cyclic-polygon method with Marla, Kanal, Acre conversion.

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Tile Calculator — Work out tile quantity for floors | Premium Converters

Premium Converters

Premium Converters

Tile Calculator

Tile Calculator

Room Dimensions (feet)

Tile Size (inches)

Overview — Tile Calculator

From the editors — what to know before you start

Pro tips most people learn the hard way

?What is the Tile Calculator?

The Formula

Tile Quantity Reference — By Room Size & Tile Size (10% waste included)

Put It in Perspective

Practical Examples

Frequently Asked Questions

Popular Conversions

Embed this calculator on your site

Browse other categories

Premium Converters

Tile Calculator

Tile Calculator

Room Dimensions (feet)

Tile Size (inches)

Overview — Tile Calculator

From the editors — what to know before you start

Pro tips most people learn the hard way

?What is the Tile Calculator?

The Formula

Tile Quantity Reference — By Room Size & Tile Size (10% waste included)

Put It in Perspective

Practical Examples

Frequently Asked Questions

Popular Conversions

Embed this calculator on your site

Browse other categories

Premium Converters

Premium Converters

Tile Calculator

Tile Calculator

Room Dimensions (feet)

Tile Size (inches)

Overview — Tile Calculator

From the editors — what to know before you start

Pro tips most people learn the hard way

?What is the Tile Calculator?

The Formula

Tile Quantity Reference — By Room Size & Tile Size (10% waste included)

Put It in Perspective

Practical Examples

Frequently Asked Questions

Why is a waste allowance necessary?

Does a larger tile mean fewer tiles and less cost?

How much extra should I allow for a diagonal or herringbone layout?

Do I need to account for grout lines in the calculation?

Should I keep extra tiles after installation?

How do I calculate for a shower or niche?

What if my room is not a simple rectangle?

Does the tile thickness or edge type matter for count?

Popular Conversions

Embed this calculator on your site

More Construction Tools

Browse other categories

Premium Converters

Tile Calculator

Tile Calculator

Room Dimensions (feet)

Tile Size (inches)

Overview — Tile Calculator

From the editors — what to know before you start

Pro tips most people learn the hard way

?What is the Tile Calculator?

The Formula

Tile Quantity Reference — By Room Size & Tile Size (10% waste included)

Put It in Perspective

Practical Examples

Frequently Asked Questions

Why is a waste allowance necessary?

Does a larger tile mean fewer tiles and less cost?

How much extra should I allow for a diagonal or herringbone layout?

Do I need to account for grout lines in the calculation?

Should I keep extra tiles after installation?

How do I calculate for a shower or niche?

What if my room is not a simple rectangle?

Does the tile thickness or edge type matter for count?

Popular Conversions

Embed this calculator on your site

More Construction Tools

Browse other categories