How to Use
- 1.
Add each room or floor section, choose its shape and unit, and enter the required dimensions.
- 2.
Enter fixed-area deductions and any doorway or threshold addition for each section.
- 3.
Set tile dimensions, package coverage, layout pattern, waste, and future-repair reserve.
- 4.
Choose price per tile, square foot, or box and add optional grout, thinset, underlayment, and labor assumptions.
- 5.
Review total area, tiles, boxes, material comparison, shopping list, and project cost.
- 6.
Copy, save, share, or print the estimate, then verify product and installer requirements before ordering.
Features
Rectangle and square rooms
L-shaped rooms
Circular areas
Multiple sections for irregular rooms
Feet and meter room units
Inch and centimeter tile units
Fixed cabinet and island deductions
Doorway and threshold adjustment
Straight grid layout
Diagonal layout
Herringbone layout
Brick and offset layout
Automatic pattern waste defaults
Future repair reserve
Tile count rounded up
Box count from manufacturer coverage
Price per tile, square foot, or box
Grout volume and bag estimate
Joint width and tile thickness
Thinset coverage and bag estimate
Underlayment cost
Labor cost
Total project cost
Two alternative tile-size comparisons
Area and room breakdown chart
Local project history
Copyable shopping list
Browser share
Print or save as PDF
Responsive dark-mode interface
Frequently Asked Questions
How do I calculate how many tiles I need?+
Find net floor area, add pattern waste and repair reserve, divide by one tile's area, and round up to a whole tile. The calculator performs these steps automatically.
How much tile waste should I include?+
A straight layout often starts near 10%, while diagonal or herringbone layouts commonly need more. Room complexity, cuts, defects, pattern, and installer guidance should determine the final allowance.
How do I calculate an L-shaped room?+
Split the L into two non-overlapping rectangles. Enter both rectangle dimensions in one L-shaped section and the tool adds them.
Can I calculate multiple rooms together?+
Yes. Add labeled rooms or sections and the tool sums their net areas, tile quantities, boxes, and project cost.
Should I deduct kitchen cabinets and islands?+
Deduct only permanent footprints that will not receive tile. Confirm whether tile continues under appliances, vanities, or removable cabinets.
How are tile boxes calculated?+
Waste-adjusted project area is divided by the entered manufacturer coverage per box and rounded up to a whole box.
How does layout pattern affect waste?+
Diagonal and herringbone layouts typically involve more edge cuts and offcuts, so the calculator starts them with higher waste assumptions than a straight grid.
How is grout quantity estimated?+
The estimate uses tiled area, tile perimeter relative to tile area, grout-joint width, tile thickness, approximate cured density, and bag weight. Manufacturer coverage should be used for purchasing.
How many bags of thinset do I need?+
The calculator divides waste-adjusted area by the coverage per bag and rounds up. Trowel size, tile format, substrate, and back-buttering can change actual coverage.
Does total cost include every installation expense?+
No. It includes entered tile, grout, thinset, underlayment, and labor assumptions. Add taxes, delivery, demolition, transitions, waterproofing, leveling, and other project costs separately.
Can I compare different tile sizes?+
Yes. Two alternative sizes show approximate tile counts for the same area. Layout and cuts can still make real waste different.
Can I save or print the shopping list?+
Yes. Save locally, copy the list, share the tool, or print and save the page as a PDF.
About this tool
Free Tile Flooring Calculator
Use this free Tile Flooring Calculator to estimate tile quantity, boxes, waste, grout, thinset, underlayment, labor, and total project cost. Add multiple rooms or sections, choose a shape and layout pattern, and compare common tile sizes before ordering.
How the Tile Flooring Calculator Works
The calculator converts every room or section to square feet, subtracts fixed exclusions, adds doorway or threshold area, and sums the project. Pattern waste and an optional future-repair allowance are applied before tile and box quantities are rounded up to whole purchasable units.
Calculate Tile for a Rectangular Room
For a rectangle or square, multiply room length by width. A 12-by-10-foot room contains 120 square feet before deductions. Measurements entered in meters are converted to square feet and square meters are shown in the result.
L-Shaped, Irregular, and Circular Floor Areas
An L-shaped room is modeled as two non-overlapping rectangles. Irregular rooms can be divided into multiple labeled sections and added to the same project. A circular area uses pi times radius squared. Curved boundaries, alcoves, and angled cuts can require additional field measurements and waste.
Cabinet, Island, and Fixed-Furniture Deductions
Enter the combined footprint of cabinets, islands, fireplaces, or other permanent areas that will not receive tile. A separate doorway or threshold adjustment can add small connecting areas. Confirm whether tile will continue under appliances, vanities, or removable cabinetry before deducting them.
Tile Size and Number of Tiles Needed
Enter tile length and width in inches or centimeters. Tile count equals waste-adjusted project area divided by one tile's area, rounded up. Nominal tile dimensions, actual dimensions, grout joints, cuts, breakage, and pattern alignment can affect the final quantity.
Tile Boxes Needed
When tile is sold by the box, enter the manufacturer's coverage per box. Boxes are rounded up because partial boxes generally cannot be purchased. The box result can differ from a simple tile count when package coverage or pieces per carton are based on nominal dimensions.
Straight, Diagonal, Herringbone, and Offset Layout Waste
The selected layout provides a starting waste percentage: straight grid uses the lowest default, while diagonal and herringbone begin higher because they commonly require more cuts. Room complexity, installer technique, tile defects, pattern repeats, and future matching needs may justify a different allowance.
Extra Tile for Future Repairs
An optional repair reserve is added separately from installation waste. Keeping matching tile can help after future damage because dye lots and product lines change. Storage space, product availability, and owner preference determine the appropriate amount.
Tile Cost Calculator
Choose pricing per tile, per square foot, or per box. The tool uses the corresponding rounded purchase quantity to estimate tile cost. Taxes, delivery, trim pieces, transitions, substrate repair, demolition, disposal, sealers, and equipment are not automatically included.
Grout Needed Calculator
The grout estimate uses project area, tile dimensions, joint width, tile thickness, and bag weight to approximate grout volume and bags. Real coverage varies with joint depth, tile edge shape, density, waste, mixing, and manufacturer formulation, so the product coverage chart should override this planning estimate.
Thinset and Adhesive Calculator
Enter the stated square-foot coverage per bag. Thinset bags equal waste-adjusted tiled area divided by coverage, rounded up. Trowel notch, substrate flatness, tile size, back-buttering, mortar type, and installation standard can significantly change actual usage.
Underlayment and Labor Cost
Optional underlayment and labor rates are multiplied by the applicable project area. This provides an early budget, not a contractor quote. Waterproofing, uncoupling membrane seams, primers, leveling, heating systems, and special preparation may be separate.
Compare Tile Size Options
Enter two alternative tile sizes to compare approximate piece counts using the same project area and waste assumptions. Fewer pieces do not automatically mean less waste or easier installation; room geometry and layout direction remain important.
Save, Copy, Print, and Export a Shopping List
Save projects locally in the browser, copy a room-by-room shopping list, share the tool, or print and save the page as PDF. Saved records stay on the current device unless copied or exported.
Verify Quantities Before Ordering Tile
Recheck measurements, actual tile and carton coverage, lot numbers, layout, cuts, pattern repeat, grout and mortar coverage, substrate requirements, and installer recommendations before purchasing. This calculator is an educational planning estimate, not an installation specification.
Confirm every floor section with the Square Footage Calculator, estimate the rest of a room renovation with the Paint Calculator, or check a custom waste allowance using the Percentage Calculator.