Tile Square Footage Calculator. Tile Square Footage Calculator: Calculate exact tile square footage for floors, walls, and backsplashes. Supports straight-lay, diagonal, and herringbone.

Precision Calculator

Tile Square Footage Calculator — Floor & Wall Area

Tile Square Footage Calculator: Calculate exact tile square footage for floors, walls, and backsplashes. Supports straight-lay, diagonal, and

Room Dimensions

Material Waste FactorOptional

Estimate Material CostOptional

Calculation Results

Explore Our Square Footage Calculators

Choose a specialized calculator for your exact project — rooms, shapes, materials, outdoor areas, and unit conversions.

Room Calculator → House Calculator → Bedroom Calculator → Bathroom Calculator → Kitchen Calculator → Multiple Rooms → Rectangle Calculator → Triangle Calculator → Circle Calculator → Trapezoid Calculator → Polygon Calculator → Irregular Shape → Odd Shape → Uneven Sides → Flooring Calculator → Tile Calculator → Paint Calculator → Concrete Calculator → Insulation Calculator → Lawn Calculator → Yard Calculator → Landscaping Calculator → Pool Calculator → Garage Calculator → Roof Calculator → Wall Calculator → Feet & Inches → Inches Calculator → Height Width Length → Sq Ft to Acres → Sq Ft to Cubic Yards →
1 ft (12 in) 1 ft 1 ft² = 144 in²

Tile Square Footage Calculator — Grout, Layout, and Coverage Planning

Tile projects require more precision than almost any other material order because tile comes in discrete units, mistakes in grout joint calculations change the apparent tile count, pattern choices dramatically affect waste, and discontinued tile batches make re-ordering mid-project costly or impossible. The workflow is: calculate the area, choose the tile size and grout joint width, determine tiles per square foot, apply the pattern waste factor, and round up to the nearest full box.

This calculator starts with the area. Enter your floor or wall dimensions to get the base square footage. Then use the waste factor appropriate to your tile and pattern choice.

Grid with 1/8" grout joints — offset every other row

Grout Joint Width Effect on Tile Count

Grout joints add to the effective tile spacing, slightly reducing the number of tiles needed per square foot compared to a pure tile-size calculation. However, grout joints also create material waste at cut edges where the grout joint does not align with the room boundary. For practical ordering purposes:

  • 1/16" grout joint: negligible effect — use pure tile area calculation
  • 1/8" grout joint: adds ~1% to effective spacing — negligible for small tile areas
  • 3/16" grout joint: reduces tile count by ~1.5% — relevant only on very large orders
  • 1/4" grout joint (brick/rustic): reduces tile count by ~2% but increases grout quantity significantly

Tile Layout Patterns and Waste Factors

  • Straight/grid (0°): 10% waste — most efficient, tiles align with room walls
  • Brick/running bond offset (33% or 50%): 10% waste — one direction is straight, cuts are efficient
  • Diagonal (45°): 15% waste — all perimeter tiles require diagonal cuts
  • Herringbone: 15–20% waste — two orientations, many short cuts
  • Basketweave: 15% waste — complex but tiles align at 90°
  • Versailles pattern (4 sizes): 20% waste — order each size separately; cuts in one size cannot substitute for another
  • Chevron: 20% waste — angle cuts at both ends of every plank
Herringbone: add 15–20% waste

Calculating Grout Quantity

Grout quantity depends on tile size, grout joint width, and tile thickness. The formula: Pounds of grout = Area (sq ft) × joint width (inches) × tile thickness (inches) × 144 × grout density factor / (tile length + joint width) × (tile width + joint width). In practice, use manufacturer coverage tables on the grout packaging — they give bags needed per 100 sq ft at various tile sizes and joint widths. For a 12"×12" tile with 3/16" joints, typical coverage is 40–60 sq ft per 10 lb bag of unsanded grout.

Tile Box Coverage and Ordering

Tile boxes state coverage in square feet. Divide your total order area (including waste factor) by the box coverage to get the number of boxes. Always round up. Buy all tiles from the same production batch (lot number) — even the same tile from a different batch can have subtle colour or dimension variations that become visible in the finished floor. Inspect box lot numbers when receiving delivery and set aside mismatched boxes before installation begins.

Related tools: flooring calculator · bathroom calculator · kitchen calculator · inches calculator

How It Works

1

Select Shape

Choose from 13 shapes including rooms, walls, circles, triangles, and more.

2

Enter Dimensions

Input measurements in any unit. Add quantity, waste factor, and material price.

3

Get Results

View area in ft², in², yd², m², acres plus cost estimate — all at once.

Frequently Asked Questions

Measure the area to be tiled (length × width) and add 10–15% for waste from cuts and breakage. For walls, measure wall width × height and subtract any windows or doors. Enter your measurements in this calculator with the appropriate waste factor.
Calculate the total area in square feet (including waste), then divide by the area of one tile. For example, for 100 sq ft with 12×12 inch tiles (1 sq ft each), you need 100 tiles. For 6×6 inch tiles (0.25 sq ft each), you need 400 tiles.
Use 10% for simple straight-lay patterns, 15% for diagonal patterns, and 15–20% for herringbone, chevron, or complex mosaic patterns. Add extra for rooms with many cuts around fixtures, corners, and irregular walls.
Calculate the floor area (length × width) and each wall area (width × height) separately. Subtract window and door openings from wall areas. Add all areas together, then add your waste factor. The calculator handles all the math.
Tile adhesive coverage is typically 40–60 sq ft per bag. Grout coverage depends on tile size and joint width — generally 1 bag covers 40–100 sq ft. Calculate your total tile area first, then use manufacturer guidelines for adhesive and grout quantities.
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