Tile calculator

How many tiles for a wall or floor, the boxes to buy, and the adhesive and grout, for your tile size, joint and pattern.

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Measure the rooms off the drawing with Take-off and SiteHelm PRO works out the tiles, adhesive, grout and trims, then puts them into an order or a quote. Save it to the job.

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Worked example

10 m² of bathroom wall in 600 × 300 mm tiles, 3 mm joints, laid straight:

61 tiles to order

5.47 tiles per m² (600 × 300 mm with the joint), 55 before waste
10% extra for straight (grid)
2 bags of adhesive (20 kg), 1 bags of grout (5 kg)

How the sum works

Each tile takes up its own size plus one joint each way, so tiles per m² = 1,000,000 ÷ ((length + joint) × (width + joint)). The calculator multiplies by the area and adds 10 percent for straight or brick bond and 15 percent for diagonal and herringbone, where there are more cuts.

Adhesive and grout

Adhesive is about 3 kg per m² with a 6 mm notched trowel, 5 kg with a 10 mm and 6 kg with a 12 mm, plus 10 percent. Grout depends on the joint width and depth and the tile size. Check both against the maker's chart for your products.

Before you order

Buy all the tiles from one batch, keep a few spare for repairs, and check the floor or wall is flat, sound and ready. Wet rooms and showers need tanking first.

Guides that go with it

How do I do a quantity take-off from drawings?How to take off quantities from drawings for a small job: scale check, set order, deductions, waste and pricing, with a worked garden room example.What should I put in a quote for building work?What a quote for building work should say: scope, exclusions, drawings, price and VAT, validity, payment stages, dates, provisional sums and variations.How do I do an on-screen take-off from a PDF drawing?How on-screen take-off works: what you need, setting and checking the scale, measuring lengths, areas and counts, and when not to scale a drawing at all.

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Every calculator

The construction manager’s toolbox.

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