Kitchen Tile Calculator
Estimate kitchen floor and backsplash tile in one place. Enter room dimensions, cabinet or island deductions, backsplash length and height, tile size, waste allowance, box quantity and price to calculate area, tile count, full cartons and a practical material-cost estimate.
Kitchen Tile Estimator
Free ToolCalculate Floor and Backsplash Separately
Kitchen floors and backsplashes often use different tile products, but measuring both areas together helps you understand the project before creating separate final orders.
Floor Area
Multiply room length by width, then subtract fixed cabinets, islands or sections that will remain permanently untiled.
Backsplash Area
Multiply the combined wall length by tile height and subtract only large windows or areas that will not receive tile.
Small Openings
Outlets and switch boxes usually remain in the gross area because whole tiles must still be purchased and cut.
Waste Allowance
Straight layouts use less extra material than diagonal, herringbone or detailed backsplash patterns.
Different Products
Calculate floor tile, backsplash tile, trim and decorative accents separately when their size or packaging differs.
Full Cartons
Round upward, then check current box coverage, shade, caliber and return conditions before purchase.
How to Calculate Kitchen Floor Tile
Start with a top-down sketch showing walls, doorways, fixed cabinet runs, an island, pantry sections and adjoining rooms. Divide irregular kitchens into rectangles, calculate each rectangle and add the areas. This method is more reliable than estimating the room from one overall dimension when alcoves or angled sections are present.
Multiply the finished floor length by width. Subtract only areas that definitely will not receive tile. If tile will continue beneath removable appliances, include those spaces. Whether to tile beneath permanent cabinets depends on the construction sequence, renovation plan and installer recommendation.
Net floor area = total kitchen floor area − fixed untiled cabinet, island or obstruction area. Required tile = net area ÷ one tile’s coverage, then add waste and round upward.
Measure Finished Dimensions
Use the surface that will actually receive tile. Drywall, cabinet end panels, toe kicks and transitions can change usable dimensions. During early planning, rough room measurements provide a budget estimate, but confirm the floor after demolition or preparation before placing a large final order.
Cabinets and Islands
Subtract cabinet footprints only when those areas will remain permanently untiled. Some projects tile the complete room before cabinets are installed, which creates a continuous finished floor and changes the quantity. An island may also be movable, furniture-style or installed after tile, so confirm the project sequence first.
Appliances and Doorways
Include tile beneath refrigerators, ranges, dishwashers and freestanding appliances when the flooring will continue into those spaces. Add doorway recesses and transitions that receive tile. Small floor vents and pipe openings usually remain in the gross area because full tiles are still cut around them.
Deduct only large areas that genuinely remain untiled. Small cuts around pipes, vents and appliance connections still require purchased tile.
Irregular Kitchen Shapes
For an L-shaped kitchen, divide the floor into two rectangles and add their areas. For angled walls, use triangles or enclosing rectangles and keep an appropriate cutting allowance. A detailed drawing with labeled dimensions helps prevent duplicate counting and makes the final layout easier to review.
Choose Extra Tile for the Kitchen Layout
Waste depends on room shape, pattern direction, tile material, backsplash details and how efficiently cut pieces can be reused.
10 Percent
A useful starting point for a simple straight floor layout or regular backsplash with few obstacles.
12–15 Percent
Consider this range for many kitchens with cabinets, corners, outlets, moderate pattern alignment and several transitions.
20 Percent or More
Complex herringbone, diagonal layouts, fragile stone, handmade tile or many decorative cuts may require more.
How to Calculate Kitchen Backsplash Tile
Measure the total horizontal length of every wall section that will receive backsplash tile. Multiply that combined length by the intended height. Standard counter-to-cabinet spaces are often measured as one consistent band, but ranges, windows, open shelves and full-height feature walls may require separate rectangles.
Subtract large windows or permanently untiled sections. Keep outlets, switches and small plumbing penetrations in the gross area. These openings do not usually reduce the number of tiles purchased because pieces must still be cut around each box or pipe.
Full-Height Backsplashes
A backsplash extending from countertop to ceiling needs more tile than a standard counter-to-cabinet installation. Measure each full-height wall section separately, especially around range hoods, open shelving and windows. The backsplash tile calculator can help when the wall product differs from the kitchen floor.
Ranges and Feature Areas
Decide whether tile continues behind the range, under the hood or across the entire feature wall. Decorative panels, framed inserts and accent bands should be calculated as separate products when their tile size, price or waste differs. This prevents an average coverage figure from hiding a shortage.
Outlets and Switches
Do not deduct standard electrical boxes from the purchase area. They create detailed cuts and can increase waste, especially with small patterns or fragile materials. Confirm box extensions, cover-plate depth and electrical requirements with qualified professionals before installation.
Trim and Exposed Edges
Measure every vertical or horizontal edge where backsplash tile ends without meeting a cabinet, wall or finished surface. Use the tile trim calculator to convert total edge length into complete profiles, bullnose pieces or other finishing products.
Turn Kitchen Area Into a Purchase Plan
Divide total area by one tile’s coverage, add the selected waste percentage and round upward. Then divide the tile quantity by pieces per carton and round upward again. A result of 7.2 boxes requires eight full cartons unless the retailer sells individual pieces.
Carton coverage is often more reliable than nominal tile dimensions. A tile called 12×24 inches may not measure exactly 12 by 24, and packaging already reflects the number of pieces supplied. Use the box coverage calculator when square-foot coverage is printed on the carton.
Separate Floor and Backsplash Orders
The calculator can combine areas for a quick total only when the same tile covers both surfaces. Most kitchens use different products, so calculate and order them separately. Floor tile, backsplash tile, mosaic accents, trim and threshold pieces can have different carton sizes, prices and waste rates.
Check Shade and Caliber
Compare labels across every carton. Tile from different production runs can vary in color or dimensions. Purchase the required quantity together when possible, blend pieces from several boxes and keep a small labeled reserve for later repairs.
Plan the Layout Before Ordering
Square footage does not show narrow cuts beside cabinets or awkward backsplash pieces at corners. Plot the tile module and grout joint across important sight lines. The tile layout calculator helps compare rows, columns and centered layouts before material is ordered.
Grout, Mortar and Underlayment
Tile quantity does not determine installation materials by itself. Grout depends on joint dimensions, while mortar coverage changes with tile format, trowel size and substrate condition. Use the grout calculator, thinset calculator and backer board calculator.
Before purchase confirm finished kitchen dimensions cabinet and island deductions appliance coverage backsplash height window deductions actual tile size carton coverage pattern direction grout joint trim requirement waste allowance shade code caliber return policy and installer layout. Keep floor tile backsplash tile mosaics thresholds and profiles as separate calculations whenever their product packaging or waste differs. A second measurement and reviewed layout can prevent shortages narrow cuts mismatched batches and unnecessary unopened cartons. Before purchase confirm finished kitchen dimensions cabinet and island deductions appliance coverage backsplash height window deductions actual tile size carton coverage pattern direction grout joint trim requirement waste allowance shade code caliber return policy and installer layout. Keep floor tile backsplash tile mosaics thresholds and profiles as separate calculations whenever their product packaging or waste differs. A second measurement and reviewed layout can prevent shortages narrow cuts mismatched batches and unnecessary unopened cartons. Before purchase confirm finished kitchen dimensions cabinet and island deductions appliance coverage backsplash height window deductions actual tile size carton coverage pattern direction grout joint trim requirement waste allowance shade code caliber return policy and installer layout. Keep floor tile backsplash tile mosaics thresholds and profiles as separate calculations whenever their product packaging or waste differs. A second measurement and reviewed layout can prevent shortages narrow cuts mismatched batches and unnecessary unopened cartons. Before purchase confirm finished kitchen dimensions cabinet and island deductions appliance coverage backsplash height window deductions actual tile size carton coverage pattern direction grout joint trim requirement waste allowance shade code caliber return policy and installer layout. Keep floor tile backsplash tile mosaics thresholds and profiles as separate calculations whenever their product packaging or waste differs. A second measurement and reviewed layout can prevent shortages narrow cuts mismatched batches
Confirm finished dimensions, carton coverage, product suitability, waste, layout, shade and return conditions before purchasing.
Kitchen Tile Calculator FAQs
These answers cover recurring search topics around floor deductions, backsplashes, cabinets, outlets, waste, boxes and tile cost.
How do I calculate tile for a kitchen floor?
Multiply floor length by width, subtract areas that definitely remain untiled, divide by tile or carton coverage, add waste and round upward.
Should I subtract kitchen cabinets?
Subtract cabinet footprints only when tile will not be installed beneath them. Confirm the construction sequence before making the deduction.
Do I include tile under appliances?
Include spaces beneath refrigerators, ranges, dishwashers and freestanding appliances when the finished floor continues into those areas.
How do I calculate a kitchen backsplash?
Multiply the total backsplash length by tile height, add separate feature sections and subtract only large windows or permanently untiled areas.
Should I subtract electrical outlets?
Usually not. Full tiles are still purchased and cut around outlets, so small boxes rarely reduce the practical quantity.
How much extra kitchen tile should I buy?
Ten to fifteen percent is common for many layouts. Herringbone, diagonal patterns, fragile stone or complicated rooms may need 20 percent or more.
Can floor and backsplash tile be combined?
Only when the same product, carton coverage and waste allowance apply. Different products should be calculated and ordered separately.
How many boxes of kitchen tile do I need?
Divide required area including waste by the square-foot coverage per box, then round upward to the next complete carton.
Does the calculator include grout and mortar?
No. Those materials require separate calculations based on joint size, trowel selection, product coverage and installation conditions.
How accurate is the estimate?
It is a planning result based on your inputs. Actual cuts, damaged pieces, out-of-square walls and installer technique can change the final order.
Measure the Kitchen Before You Order
Calculate floor and backsplash areas, then verify box coverage, layout and waste with your supplier or installer.