How much tile waste should I include?

For straight layouts use about 10%. Diagonal layouts, small rooms or patterned tile work may need 12% to 15%.

Does grout spacing change tile quantity?

Yes. Grout spacing slightly increases the nominal coverage of each tile, which affects the final count and box estimate.

Interactive estimation tool

Floor Tile Calculator for Boxes, Grout and Adhesive

Estimate floor tile quantities, box counts, grout spacing, adhesive needs and cutting waste for renovation and construction projects.

Estimation Inputs

Enter measurements in the selected display units. The calculator converts them to canonical formula units before running the estimate.

Floor Area

m²

Net floor surface area.

Tile Length

Physical tile length.

Tile Width

Physical tile width.

Tiles Per Box

pcs

Number of tiles packed in one box.

Waste Margin

Extra allowance for cuts and breakage.

Grout Joint Width

Spacer width between tiles.

Adhesive Bed Thickness

Average adhesive layer thickness.

Pricing & Rates

Prices are editable per estimate. Regional settings only provide starting rates, tax and currency labels.

Material Unit Price

AED

Price per purchase unit used by this calculator.

Labor Unit Rate

AED

Applied to the estimated purchase quantity.

VAT Tax Percent

Use 0 if tax is not applicable.

Quantity Takeoff

net Tile Count

tiles With Waste

purchase Boxes

purchase Area

23.04

Formula Trace

Nominal Tile Area (incl. Grout):

(Tile Length + Grout Width) * (Tile Width + Grout Width)

(0.600 m + 0.000 m) * (0.600 m + 0.000 m)

= 0.360 m²

Net Tile Count:

ceil(Floor Area / Nominal Tile Area)

ceil(20.00 m² / 0.3600 m²)

= 56.000 pcs

Tiles with Waste:

ceil(Net Tiles * (1 + Wastage % / 100))

ceil(56 * (1 + 10.0 / 100))

= 62.000 pcs

Purchase Boxes:

ceil(Tiles with Waste / Tiles per Box)

ceil(62 / 4)

= 16.000 boxes

Purchase Area Coverage:

Purchase Boxes * Tiles per Box * Single Tile Area

16 * 4 * 0.3600 m²

= 23.040 m²

Adhesive Weight (incl. Waste):

Area * Thickness * 1.5 kg/m²/mm * (1 + Waste % / 100)

20.00 m² * 0.0 mm * 1.5 * (1 + 10.0/100)

= 0.132 kg

Estimate Outcome

Material Cost:1600.00 AED

Labor Cost:1920.00 AED

Tax VAT:176.00 AED

Total Price:3696.00 AED

Create a project and room first, then return here to attach this estimate to the BOQ.

Calculation guide and formulas

Use this tile calculator to plan floor tile purchases with tile size, grout joint width, tiles per box, adhesive thickness and waste percentage.

Understand the units, allowances and purchase rounding (English).

Nominal Tile Area = (Tile Length + Grout) × (Tile Width + Grout); Tiles = ceil(Floor Area / Nominal Tile Area)

Worked example

A 20 m² floor using 60 × 60 cm tiles with 3 mm grout needs about 55 tiles before waste. With 10% waste, order 61 tiles, or 16 boxes when each box contains 4 tiles.

Frequently asked questions

Q: How much tile waste should I include?
A: For straight layouts use about 10%. Diagonal layouts, small rooms or patterned tile work may need 12% to 15%.
Q: Does grout spacing change tile quantity?
A: Yes. Grout spacing slightly increases the nominal coverage of each tile, which affects the final count and box estimate.