How much tile waste percentage should I add?

For standard rectangular rooms with straight grid patterns, add 10% wastage. For diagonal or herringbone layouts, add 15% to 20% extra tile material.

How do I calculate how many boxes of tile I need?

Divide total room square footage (plus 10% waste) by square footage per tile to get total tiles, then divide by tiles per box and round up to the nearest whole number.

Smart Home Renovation & Flooring Estimator

Tile & Flooring Area Calculator

Calculate how many tiles and boxes you need with cutting wastage, square footage, material budget, and installation labor costs.

Room & Tile Dimensions

1. Room / Surface Size

Length (ft)

Width (ft)

2. Individual Tile Size

Tile Length (in)

Tile Width (in)

Tiles Per Box

Cutting Waste (%)

Price / Sq Ft ($)

Total Boxes to Purchase

20 Boxes

(199 total tiles including 10% cutting waste)

Surface Area

180.0 sq ft

Total Estimated Cost

$1413.00

Flooring Budget Breakdown

Room Floor Area:180.0 sq ft

Area with 10% Waste:198.0 sq ft

Tile Material Cost:$693.00

Estimated Labor Cost:$720.00

Embed this calculator

How to Calculate Tile Flooring and Avoid Running Short

When tiling a floor, wall, or backsplash, always order 10% to 15% extra material. Professional installers account for tile cuts around doorways, pipe penetrations, corners, and occasional chipped tiles during transport.

Pattern Wastage Guide

• Straight / Grid: 5% – 10%
• Diagonal (45° angle): 15%
• Herringbone: 15% – 20%

Tile Formula

Total Tiles = (Total Sq Ft ÷ Tile Sq Ft) × (1 + Waste %)

Always round UP to the nearest full box.

Related Tools:

Concrete Calculator Unit Converter