Tile Calculator for Floors and Walls

Enter the surface size, the tile size, the grout gap and the waste reserve. The calculator returns the number of tiles, how many boxes to buy and what the tiling will cost.

7-in-1 Pro Calculators

±1% Formula Accuracy

EN/RU/ES 3 Languages

Wall & Ceiling Paint Estimator

Room Dimensions

Room Length m

Room Width m

Wall Height m

Include Ceiling?

Doors, Windows & Coverage

Number of Doors

Number of Windows

Number of Coats

Paint Coverage m²/L

Container Size L

Price per Container $

Ceramic & Porcelain Tile Estimator

Surface Dimensions

Area Length m

Area Width m

Tile Size, Waste & Packaging

Tile Length cm

Tile Width cm

Grout Joint Gap mm

Cutting / Waste Reserve %

Coverage per Box m²

Price per Box $

Laminate & Hardwood Flooring Estimator

Room Floor Dimensions

Room Length m

Room Width m

Plank Size, Pattern & Packaging

Plank Length cm

Plank Width cm

Installation Pattern (Waste %)

Area per Pack m²

Price per Pack $

Underlayment Price per Area $

Wallpaper Rolls & Paste Calculator

Room Dimensions

Room Length m

Room Width m

Wall Height m

Roll Dimensions & Pattern Repeat

Roll Width cm

Roll Length m

Pattern Repeat (Offset) cm

Number of Doors

Number of Windows

Price per Roll $

Drywall Sheets, Framing & Screws Estimator

Structure Type & Sheet Dimensions

Construction Type

Single Sheet Area m²

Wall / Room Length m

Height (or Ceiling Width) m

Price per Drywall Sheet $

Concrete Slab, Screed & Bags Calculator

Slab / Pour Dimensions

Slab Length m

Slab Width m

Thickness / Depth cm

Reserve, Pre-Mix Bags & Pricing

Spillage / Grade Reserve %

Dry Mix Bag Size kg

Price per Bag $

Appliance Electricity Cost Calculator

Appliance Power & Usage Schedule

Appliance Name

Power Consumption W

Hours Used per Day h

Days Used per Month 1–31

Electricity Rate (per kWh) $

Live Calculation Summary

Paint required

9.1 L

4 cans × 2.5 L

Net Requirement 88% / 12% Reserve / Deductions

Compare Current Material Prices:

Home Depot Lowe's Amazon DIY Leroy Merlin

My Renovation Shopping List & Budget

Category / Calculation	Required Quantity	Estimated Cost

Frequently asked questions

How much extra tile should I buy for cutting waste?

For straight layouts add 7–10%. For diagonal patterns or rooms with many corners and alcoves add 12–15%, which also leaves a few spare tiles for future repairs.

Does the grout gap change how many tiles I need?

Slightly. A wider joint means each tile covers a little more area including its gap, so you need fewer tiles. The calculator adds the joint width to each tile before counting.

How many boxes of tile should I order?

Divide the area to cover (plus waste) by the area in one box and round up. Tile is sold in whole boxes, so the calculator rounds up for you.

Why buy all the tile at once?

Tiles from different production batches can differ slightly in shade and size. Buying everything at once, with a few spare tiles, avoids a visible mismatch if you need to repair the floor later.