SettingsSettings for this calculationUS
The standard allowance most suppliers and estimating guides assume for ordinary work.
The floor or wall the levelling system is going under.
Use the area actually being levelled. Small areas of cut tiles at the edges still take clips — often more of them per square metre, because a cut tile has the same joint to control with less tile to hold it.
The long side of one tile.
Levelling systems earn their place from about 300 mm upwards and become close to essential past 600 mm, where a millimetre of lippage at a joint is visible across the room and catches underfoot.
The short side of one tile.
A long thin plank has far more joint per square metre than a square tile of the same area, and therefore far more clips: 1,200 × 200 mm planks carry about three quarters more joint than 600 × 600 tiles over the same floor.
How far apart the clips go along each joint.
Close the spacing where the substrate is uneven, where the tile is rectified with a narrow joint, or where the tile is thin enough to flex between clips. Open it out on a screed that is already flat. Most manufacturers give a figure for their own clip and it is the one to follow.
A wedge comes back out and goes into the next clip. Clips do not.
The wedges you need at once are the ones holding the tiles laid in the current session, so the working set depends on how much floor goes down before the adhesive sets enough to strike them. Eight is a fair figure for a room laid in stages; put 1 here to price a wedge for every clip, which is what a set that is never struck would need.
Clips snapped in the wrong place, and the box you do not want to run out of.
Clips break early, get placed and moved, and disappear under adhesive. Ten per cent is the usual margin — and since they are sold in boxes of a hundred, the rounding up to a whole box is generally larger than the allowance anyway.
Levelling clips needed
248 clips
About 3 box(es) of clips and 31 wedges. Check your clip's own spacing — it moves this figure more than anything else.
- Joint length
- 220 ft
- Clips before the allowance
- 225 clips
- Allowance at 10%
- 23 clips
- Boxes of 100
- 3 boxes
- Wedges, reused 8×
- 31 wedges
They open the calculator with your figures already in it
Tile Levelling Clip and Wedge Calculator: 248 clips — shown in imperial, US market. The link sets both, so the result they see is the one on your screen.
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How this was calculated
Formula source(s)
- Joint geometry: each tile contributes (length + width) of shared joint, and there are 1 ÷ (length × width) tiles in a unit of area, so joint length per unit area is (L + W) ÷ (L × W)
- Levelling systems place a clip at intervals along every joint, typically 200 to 400 mm apart depending on tile size and how flat the substrate is
- Clips are consumed — the stem snaps off in the adhesive — while wedges are withdrawn and reused, so the two are bought in very different numbers
Inputs used
- Area being tiled
- 220 sq ft
- Tile length
- 24 in
- Tile width
- 24 in
- Clip spacing along the joint
- 11.75 in
- Times each wedge is reused
- 8
- Extra clips
- 10
Intermediate steps
- Joint length
- 220 ft
- Clips before the allowance
- 225 clips
- Allowance at 10%
- 23 clips
- Boxes of 100
- 3 boxes
- Wedges, reused 8×
- 31 wedges
Confidence note: About 3 box(es) of clips and 31 wedges. Check your clip's own spacing — it moves this figure more than anything else.
What this calculation does not cover
- Clips are consumed and wedges are not. The headline is the clip count; the wedge count is a working set, and it assumes wedges are struck and reused as the work moves on.
- The clip spacing is the figure that moves the answer most, and it belongs to the system being used. Halving it doubles the order. Where the manufacturer states a spacing for their clip and tile size, that figure wins over the default here.
- The joint length assumes a stack or grid layout. A brick or herringbone bond has the same total joint length, but a diagonal layout over the same floor has more cut tiles at the perimeter and takes more clips there than the arithmetic shows.
- Clip stems are sized to the tile thickness and joint width, and the wrong size either will not fit the joint or will not snap below the surface. This counts them; it does not choose them.
Estimated cost — your price
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.
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 2026-09-23 · v1.0.0
Regulatory standards & verification citations3
- Joint geometry: each tile contributes (length + width) of shared joint, and there are 1 ÷ (length × width) tiles in a unit of area, so joint length per unit area is (L + W) ÷ (L × W)
- Levelling systems place a clip at intervals along every joint, typically 200 to 400 mm apart depending on tile size and how flat the substrate is
- Clips are consumed — the stem snaps off in the adhesive — while wedges are withdrawn and reused, so the two are bought in very different numbers
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 floor tile, tile a wall, cut ceramic and porcelain tile, grout and seal tiling and mix adhesive or mortar. 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.
- Wet cement and lime burn skin and eyes painlessly until the damage is done: waterproof gloves to EN 374, safety glasses whenever the mix can splash, and never kneel in wet mix in permeable trousers.
- 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.
- 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 15 tools this job needsHide tools
Essential
Chalk line
Grout float and sponge
Manual tile cutter
Mixing bucket or tub
Notched trowel
Paddle mixer
Spirit level
Tape measure
Recommended
Caulking gun
Rubber mallet
Tile nippers
Wet tile saw
Optional
Hole saw set
Laser level
Shovel and spade
Also needed as materials: caulk and sealant cartridges, chalk refill, diamond tile blades, grout sponges.
what each tiling tool is for, and the spec that decides which to buy where one does.