Construction & Building Calculators
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Tile Calculator
Room Dimensions
Tile Size
Additional Settings
Tile Requirements
Area Coverage
Grout Requirements
Quick Summary
Tile Requirements Breakdown
How Tile Calculation Works
Tile Count Calculation
Number of tiles needed = Room area ÷ Tile area. Your 120 sq ft room with 4 sq ft tiles needs 30 base tiles.
Wastage Calculation
Adding 10% wastage for cutting, breakage, and future repairs gives us 33 total tiles.
Grout Calculation
Grout needed is calculated based on room area, grout gap width (2mm), and grout density (1600 kg/m³).
Box Calculation
Tiles are typically sold in boxes of 10. You need 4 boxes for 33 tiles.
Pro Tips for Tiling
Tile Selection:
- • Large tiles: Fewer grout lines, modern look
- • Small tiles: Better for irregular spaces
- • Rectangular tiles: Can make rooms look longer
- • Consider slip resistance for wet areas
Installation Tips:
- • Start from center for symmetrical layout
- • Use tile spacers for consistent gaps
- • Order 10-15% extra for complex patterns
- • Seal grout lines after 24-48 hours
Current Calculation Summary:
About This Tile Calculator
This calculator helps homeowners and contractors figure out how many tiles, boxes, and how much grout are needed to cover a room's floor or wall. Enter your room dimensions, pick a common tile size or enter a custom one, and adjust wastage and grout gap to get an accurate purchase quantity before you shop.
Tile Calculator FAQs
How is the number of tiles calculated?
The calculator divides your total room area by the area of a single tile (converted from inches to square feet), then rounds up to the nearest whole tile.
Why is a wastage percentage added?
Cutting tiles to fit edges and corners, plus occasional breakage, wastes tiles — a 10% wastage allowance (adjustable) ensures you buy enough to finish the job without a second trip.
How many tiles come in a box?
This calculator assumes the common standard of 10 tiles per box; check your specific tile brand's packaging, as this can vary.
How is grout quantity estimated?
Grout weight is estimated from the room area, the grout gap width you set (in mm), and a standard grout density of about 1600 kg/m³.
Does tile size affect how many tiles I need?
Yes — larger tiles cover more area per piece (fewer tiles, fewer grout lines) while smaller tiles need more pieces and grout but suit irregular spaces better.
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