Tiles Calculation for Flooring: How Many Tiles Do You Need?

By Vystra · 11 August 2026

Ordering tiles is deceptively easy to get wrong: buy too few and you risk a dye-lot mismatch on the reorder; buy too many and cash sits on the floor. Here's the reliable method.

The formula

Tiles needed = Room area ÷ Tile area, + wastage.

Worked example

A 12ft × 10ft room = 120 sq ft. Using 2ft × 2ft tiles (4 sq ft each):

• 120 ÷ 4 = 30 tiles
• Add 8% wastage = 33 tiles
• At 4 tiles/box = 9 boxes

Don't forget

• Dye lots — order the full quantity in one go so colour matches.
• Skirting — add separately, usually running feet of wall.
• Pattern/diagonal layouts increase wastage to 10%+.

Keep the order tied to the room

When tile purchases are logged per project with quantities and vendor bills, you avoid double-ordering across rooms and can reconcile what was laid vs bought. Vystra tracks material purchases against each project — and the built-in tile calculator gives you the quantity before you order.

Frequently asked questions

How do I calculate the number of tiles for a room?

Divide the room area by the area of one tile, then add 5–10% for cutting and wastage. Round up to full boxes.

How much wastage should I add for tiling?

Add 5% for simple rectangular rooms and up to 10% for rooms with many cuts, diagonals or patterns.

How many 2x2 tiles in 100 sq ft?

A 2ft × 2ft tile covers 4 sq ft, so 100 sq ft needs 25 tiles plus wastage — about 27 tiles.