Tile & Flooring Calculator
Calculate how many tiles you need, plus thin-set mortar and grout. Supports common sizes, custom tiles, and multiple layout patterns.
Waste Factors by Layout Pattern
| Pattern | Waste % | Notes |
|---|---|---|
| Straight / Grid | 10% | Simplest layout, least waste |
| Brick / Offset | 12% | Staggered rows, moderate waste |
| Diagonal (45°) | 15% | More cuts at walls |
| Herringbone | 18% | Most cuts, highest waste |
FAQ
How do I calculate how many tiles I need?
Divide your total floor area (length × width) by the area of one tile (including grout lines). For example, a 120 sq ft room with 12×12 inch tiles needs about 120 tiles before waste. Add 10-18% for waste depending on your layout pattern — diagonal and herringbone patterns waste more than straight layouts.
How much thin-set mortar do I need?
A 50-pound bag of thin-set mortar covers approximately 50 square feet using a 1/4-inch square-notch trowel. Larger tiles require larger trowel notches and more mortar — a 1/2-inch trowel for 24×24 tiles uses roughly twice as much thin-set.
How much extra tile should I buy for waste?
Buy 10% extra for straight/grid layouts, 12% for brick/offset patterns, 15% for diagonal layouts, and 18% for herringbone. Also keep 2-3 extra tiles for future repairs — matching discontinued tiles is nearly impossible.
Build tile estimates with full cost breakdowns
Contractor Co-Pilot handles materials, labor, and waste for every flooring job.