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m
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Output
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Click in the output to select all text
Tile Calculator
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This Tile Calculator works out how many tiles you need to cover a room, based on the room's dimensions and the tile size, with a wastage allowance built in for cuts, breakage, and pattern matching. If your tiles are sold in boxes, enter the tiles-per-box count to also get the number of boxes to buy. Enter your room length and width in meters and tile dimensions in centimeters, and the calculator instantly shows the exact tile count and the rounded-up purchase quantity. It's built for homeowners and contractors estimating flooring or wall tile before a purchase. Everything runs locally in your browser. Scroll down to enter your measurements.
Features
- Calculates exact and purchase-ready tile counts
- Adjustable wastage allowance for cuts and breakage
- Optional boxes-needed calculation
- Instant recalculation as you adjust dimensions
Why use this tile calculator?
- Avoids under- or over-buying tiles
- No manual area/coverage math required
- Fully private — nothing uploaded
- Free with unlimited use
Frequently asked questions
How much wastage allowance should I use?
10% is a common default for straight-lay patterns; diagonal layouts, small rooms with many cuts, or patterned tiles often need 15% or more.
Does this account for grout lines?
No, this uses the tile's stated size directly; grout lines are typically thin enough that their effect on quantity is within the wastage allowance.
What if my room isn't a simple rectangle?
Break the room into rectangular sections, calculate each separately, and add the results together for an irregular layout.
Should I round up to full boxes?
Yes, this calculator automatically rounds the box count up so you don't end up short mid-project.
Does this work for wall tiles too?
Yes, the same area-based calculation applies — just enter your wall dimensions instead of floor dimensions.