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Risk assessments, method statements, SWMS and job hazard analyses, for the UK, US, Australia and Canada. Finished documents, no empty boxes left for you.

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Steel, timber, concrete, brickwork, boards, groundworks and roofs. Section data, indicative sizing, quantities and the reference tables you normally go hunting for.

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Home & property32 of 32

See what it would look like before you commit, then work out what it takes. Upload a photo of your own wall, drive or house and try things on it.

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Invoices, quotes, receipts and the rest of the paperwork, generated properly. No account, no watermark, and Download is the only button.

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Money & tax39 of 39

Wages, mortgages, tax and the everyday sums. What you actually take home, what it actually costs, and what you actually owe.

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People & hours46 of 46

Rotas, rosters and schedules, holiday and PTO, timesheets and staff paperwork. The admin that eats a Sunday evening, done in ten minutes.

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Business & marketing50 of 50

Starting up, getting found and keeping the admin straight. Everything downloadable, nothing paywalled at the last step.

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PDF & documents27 of 27

Merge, split, crop, sign, number and compress. Everything runs in your browser, so the contract you open here never reaches a server.

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Convert, resize, compress, crop and adjust. All of it on your own machine, with no upload, no account and no watermark on anything.

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Word counts, case, days between dates, working days and ages. The ten-second look-ups, with no account and nothing stored.

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Secret Santa, draws, brackets, sweepstakes, printables and party quantities. The bit that is just for fun, done properly.

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Practice tests for the cards and licences that decide whether you can work. Every answer cites the guidance it came from, not a forum.

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Tile calculator

Free. No account, no email, nothing uploaded.

Real figures, so you can see what it does before typing your own.
Shape
Units
For a hallway, a bay or a second room being done in the same material. Buying it all in one order keeps the batch the same.
On the end of the box. It varies a lot between ranges, so check yours rather than trusting a default.
Wastage
The usual allowance. Normal room, a few cuts round the edges.
What to order
10

boxes. Covers 14.4 m² against 12 m² measured.

Area measured
12 m²
Plus 10% wastage
13.2 m²
Boxes needed
10
Spare after the job
2.4 m²

Rounded up, always. 13.2 m² at 1.44 m² a box is 9.17, and you cannot buy part of one. Order 10.

Keep the spare. A cracked one in two years is unreplaceable once the range is discontinued, and batches vary enough that a new box rarely matches an old floor.

Check the batch or shade number on every box before you start. Tiles are fired in batches and the colour shifts between them, so a box opened halfway through a floor can be visibly different.

Lay the whole floor out dry before fixing anything if the room is out of square. Almost every room is, and finding out after the adhesive is down means the cut row ends up on the wrong side.

Worked out on this device, by this page. Nothing you typed was sent anywhere or stored, and closing the tab loses it.

Next in the same job

Flooring & laminate packs
Packs, underlay and trim, with the right waste for diagonal and herringbone.
Room area & volume
Measure once. Openings and sloped ceilings included, and every other tool uses it.
Render & plaster
Coat by coat, with the strength rule checked.
How to tile a wall
The batten that decides whether it looks right, and why corners get silicone not grout.

Bare area is not a number you can order

Measuring a floor is the easy part. Three things sit between that number and what you actually buy, and most calculators skip at least one of them.

Wastage

Every cut round the edge of a room produces an offcut, and most of those offcuts are the wrong shape to use anywhere else. Add breakages, a tile that chips on the cutter, and the one you drop.

Ten per cent is the trade default for a normal room laid straight.Fifteen for an awkward shape with alcoves, a bay, or a pattern that has to line up. Twenty for diagonal or herringbone, where every single cut is a triangle and almost nothing is reusable.

Boxes, not square metres

Tiles are sold by the box, and box coverage varies enormously between ranges: 1.0, 1.44, 1.8 square metres are all common. Twenty two square metres at 1.44 a box is 15.3 boxes, so you buy sixteen. Not fifteen and a bit.

This is the step where a calculator that stops at square metres leaves you to do the important part in your head at a trade counter.

Batches

Ceramic and porcelain are fired in batches, and the colour shifts slightly from one to the next. It is not a fault, it is how the material works, and it is why the batch or shade number is printed on every box.

Buy the whole job in one order and check the numbers match before you open anything. A box from a different batch, opened halfway across a floor, shows as a band of slightly different colour that you will never stop seeing.

Keep the spares, properly

Keep at least a few, ideally a full box, somewhere dry and findable. Ranges get discontinued constantly. A cracked tile two years from now is either an invisible repair from your own spares or a visible patch in whatever is closest.

Two things worth doing before you fix anything

Check the room is square. Almost none are. Measure both diagonals: if they are not the same, the room is out, and laying to a wall will leave a tapering cut down the far side. Set out from a centre line instead and split the difference between both ends.

Dry lay a row in both directions. It takes ten minutes and it tells you where the cuts land. If you end up with a 15mm sliver against the most visible wall, shifting the whole grid by half a tile fixes it, and that is a decision to make before the adhesive is out of the tub rather than after.

Adhesive and grout

This works out the tiles. As a rough guide for the rest: a 20kg bag of adhesive covers about 5 square metres at a 6mm notch on a flat floor, less on anything uneven, and considerably less on a wall. Grout depends entirely on tile size and joint width, and the bag tells you.

Buy one more bag of adhesive than you think. Running out mid-floor with a tub of half-used adhesive going off is worse than having a spare bag.

Common questions

How many tiles do I need?

Measure the area, add wastage for cuts, then divide by what one box covers and round up. A 20 square metre floor with 10 per cent wastage needs 22 square metres of tile, which at 1.44 per box is 16 boxes.

How much wastage should I allow for tiles?

Ten per cent for a normal square room laid straight. Fifteen for an awkward shape with alcoves or a pattern to match. Twenty for diagonal or herringbone, because every cut is a triangle and none of the offcuts are reusable.

Should I round up or down when buying tiles?

Always up, and never to the nearest. You cannot buy two thirds of a box, and running short on the last row means a second delivery, a second delivery charge, and a real chance the batch has changed colour.

Why do tiles from a second box look slightly different?

Ceramic and porcelain are fired in batches and the colour shifts a little between them. The batch or shade number is printed on the box. Buy it all in one order, check the numbers match, and keep the spares.

How many spare tiles should I keep?

A full box if you can. A cracked tile in two years is unreplaceable once the range is discontinued, and a new box from a different batch will not match the floor around it.