Tile Calculator
Estimate How Much Tile Your Project Needs
Measure your project area and use our tile calculator to estimate the starting quantity. Include additional material for cuts, layout adjustments, natural variation and possible future repairs.
Measurements and project conditions vary. Have your installer confirm the final quantity before ordering.
How to Use the Tile Calculator
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Select the measurement unit.
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Enter the length and width of the installation area.
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Add each separate floor, wall or section individually.
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Select an appropriate overage percentage.
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Review the estimated total square footage.
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Compare the result with the coverage stated on the product page.
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Round up to the next complete sheet, piece or box when required.
Always order enough material at one time. Natural stone may vary between production lots, and matching material may not be available later.
Basic Square-Footage Formula
For a rectangular area:
Length in feet × width in feet = square feet
Example:
10 feet × 12 feet = 120 square feet
With 10% additional material:
120 × 1.10 = 132 square feet
For measurements in inches:
Length in inches × width in inches ÷ 144 = square feet
Example:
72 inches × 48 inches ÷ 144 = 24 square feet
Measuring Multiple Areas
Divide irregular rooms, walls or floors into smaller rectangles. Calculate each section separately and add the results together.
For example:
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Section 1: 8 ft × 10 ft = 80 sq. ft.
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Section 2: 4 ft × 6 ft = 24 sq. ft.
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Total measured area: 104 sq. ft.
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With 10% additional material: 114.4 sq. ft.
When purchasing tile, round the required quantity up according to how the product is sold.
Measuring Walls and Backsplashes
Measure the width and height of each tiled wall section:
Wall width × wall height = wall square footage
Calculate each wall separately and add the totals together.
Small openings such as outlets usually should not be deducted because material will still be needed for surrounding cuts. Large windows, doors or cabinets may be deducted when appropriate, but sufficient material should remain for cuts and layout adjustments.
For backsplashes, measure each run separately—especially around ranges, windows, cabinets and changes in height.
Measuring Shower Walls
Measure the width and height of every shower wall separately, then add the results.
Also calculate these areas separately when applicable:
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Shower floor
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Ceiling
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Niche back
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Niche sides
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Bench top and faces
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Curb top and sides
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Additional accent areas
Shower walls, niches, benches and curbs often require more cutting than a straightforward floor. Ask the installer whether additional overage is appropriate.
Measuring Floors
Measure the full length and width of the floor. For irregular rooms, divide the space into rectangular sections and add them together.
Include closets, alcoves, doorways and other areas that will receive tile. Measure adjoining areas separately when they use different materials, sizes, finishes or patterns.
How Much Extra Tile Should I Order?
Additional material—often called overage or waste allowance—helps account for cuts, breakage, pattern alignment, natural variation and future repairs.
10% Additional Material
A common starting point for:
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Straightforward layouts
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Rectangular rooms
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Standard straight-set installations
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Areas with limited cutting
15% Additional Material
Consider 15% or more for:
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Diagonal layouts
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Checkerboard installations
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Herringbone or chevron patterns
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Rooms with several corners or obstacles
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Shower niches, benches and curbs
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Projects requiring selective natural-stone blending
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Areas with extensive cutting
More Than 15%
More material may be appropriate for:
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Highly complex patterns
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Small or irregular installation areas
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Extensive vein matching
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Custom fabrication
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Material requiring significant selection
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Projects where future matching will be difficult
These percentages are general planning guidelines, not fixed requirements. Your installer should determine the final allowance based on the tile, pattern, layout and jobsite conditions.
Why Natural Stone Requires Additional Material
Natural stone varies naturally in color, veining, shade, mineral deposits and surface movement. Additional material allows the installer to create a balanced blend and choose the most suitable pieces for highly visible areas and cuts.
Extra material from the original order should also be retained after installation. A future production lot may not match the original material exactly.
Tile, Sheet and Box Coverage
Products may be sold by:
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Individual tile
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Mosaic sheet
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Square foot
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Box
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Pattern set
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Linear foot
Check the product page for the stated coverage and ordering unit. The calculated square footage must be converted into the actual number of pieces, sheets or boxes required.
Example Using Box Coverage
Required quantity with overage:
132 sq. ft.
Coverage per box:
10 sq. ft.
Calculation:
132 ÷ 10 = 13.2 boxes
Because partial boxes may not be available, round up:
14 boxes
Example Using Mosaic Sheets
Required quantity with overage:
28 sq. ft.
Coverage per sheet:
0.92 sq. ft.
Calculation:
28 ÷ 0.92 = 30.44 sheets
Round up:
31 sheets
Always use the exact coverage listed for the selected product. A nominal 12 × 12-inch mosaic sheet does not always cover exactly one square foot.
Measuring Patterned Installations
Checkerboard, herringbone, chevron, basketweave, Versailles and other patterned installations may require additional planning.
Confirm:
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Pattern repeat
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Direction of installation
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Quantity required from each material
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Border and transition requirements
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Sheet or pattern-set coverage
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Cuts at walls and corners
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Installer-recommended overage
For checkerboard installations using two different stones, the quantity of each color may not be exactly equal when the room dimensions, border design or starting position affect the final layout.
Do Not Rely Only on Room Dimensions
Room dimensions provide a starting estimate, but the final order quantity may also be affected by:
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Tile size
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Grout-joint width
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Pattern direction
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Doorways and transitions
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Niches and corners
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Wall or floor irregularities
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Centering and layout choices
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Broken or unusable cuts
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Natural-stone selection
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Product packaging and box coverage
Have the installer review the measurements and layout before placing the final order.
Tile Calculator FAQs
Should I include extra tile in my calculation?
Yes. Ten percent is a common starting allowance for straightforward installations. Complex patterns, extensive cuts and selective blending may require 15% or more.
Should I round up my order?
Yes. Round up to the next complete piece, sheet, pattern set or box according to how the product is sold.
Should I subtract doors and windows?
Large openings may be deducted when appropriate. Small openings generally should not be deducted because surrounding cuts still require material.
How do I calculate tile for multiple walls?
Calculate the width multiplied by the height of each wall, then add all wall areas together. Calculate niches, benches and other tiled surfaces separately.
Does a 12 × 12-inch mosaic sheet cover one square foot?
Not necessarily. Mosaic dimensions and joint spacing vary. Always use the actual coverage listed on the product page.
How much additional material is needed for herringbone or chevron?
These patterns commonly require more cuts than a straight layout. Fifteen percent or more may be appropriate, but the installer should determine the final quantity.
How do I calculate a checkerboard floor?
Calculate the entire floor area, add the appropriate overage and determine the required quantity of each stone based on the approved layout. Borders and room dimensions may affect the balance between the two colors.
Should I order extra tile for future repairs?
Yes. Retaining unopened or usable material from the original production lot is recommended because future batches may differ in color and veining.
Can SoCalTiles confirm my measurements?
Our team can help explain product coverage and ordering units, but the project owner and installer are responsible for field measurements, layout and final quantities.
Important Calculator Notice
This calculator provides an estimate for planning purposes only. It does not account for every cut, pattern, grout joint, site condition, natural variation or installer preference.
Verify all measurements, product coverage, packaging quantities and overage requirements before ordering. The customer and installer are responsible for determining the final material quantity required for the project.
Need Help with Product Coverage?
Have the product name, project dimensions, installation pattern and destination ready. Our Customer Care team can help explain how the selected tile is packaged and sold.
For final measurements, layout planning and material quantities, consult your installer before placing the order.