Tile Calculator
Calculate the number of tiles needed for floors, walls, and backsplashes. Get accurate counts for any tile size with waste factor included.
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Tile Installation Guide
Always order extra tiles for cuts, breakage, and future repairs. Standard boxes contain 10 tiles but this varies by manufacturer.
- Larger tiles (18x18, 24x24) make a room look bigger
- Smaller tiles (4x4, 6x6) are better for showers and backsplashes
- Don't forget grout, thinset, spacers, and edge trim
How to Calculate It Yourself
If you prefer to check the math by hand, follow these steps:
- Area = length x width in sq ft.
- Tile covers = (tile size / 12) squared.
- Tiles = area x (1 + waste%) / tile covers.
- Round up. Boxes = tiles / tiles-per-box.
Worked Example
A 10 x 10 ft space (100 sq ft) with 12 in tiles at 10% waste: 100 x 1.10 = 110 sq ft / 1 = 110 tiles, about 11 boxes of 10.
Approximate Material Costs
Prices vary by region and supplier. These are rough US averages to help with budgeting.
| Item | Estimate | Notes |
|---|---|---|
| Ceramic tile (12x12) | $1 - $3 / sq ft | Entry level |
| Porcelain tile | $2 - $5 / sq ft | Denser, for floors |
| Thinset mortar (50 lb) | $15 - $25 | Covers ~100 sq ft |
| Grout (10 lb) | $15 - $25 | Covers ~200 sq ft |
Frequently Asked Questions
How many tiles do I need for a 10x10 room?
For a 10x10 room (100 sq ft) using 12x12 inch tiles with 10% waste, you need approximately 110 tiles. That's about 11 boxes if each box contains 10 tiles.
Should I buy extra tiles for future repairs?
Yes, always buy extra tiles for future repairs. Colors and styles are discontinued frequently. Store the extra tiles in a dry area for future use.
What size tile is best for a small bathroom?
Large tiles (12x24 or 18x18 inches) make small bathrooms appear larger with fewer grout lines. Small tiles (4x4 or 6x6 inches) work well for shower floors and accent areas.
How much grout do I need?
Grout quantity depends on tile size and grout line width. Larger tiles with narrow grout lines use less grout. A 10lb bag of grout typically covers 50-100 sq ft of 12x12 tiles with 1/8-inch grout lines.