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Tile & grout calculator: square feet to boxes for floor, shower & backsplash
Tile calculator and grout calculator for floors, showers and backsplashes, in one app that works offline. Enter the room and turn square feet into boxes for 12x12, 12x24, 24x24 or 24x48 tile, plus the grout, thinset, backer board and leveling clips the same job needs, with waste set by your pattern. Enter an 8 x 10 floor in 12x24 herringbone and you get 7 boxes, 3 bags of thinset at a 1/2" notch including back-butter, 7.9 lb of grout and 6 backer sheets with 180 screws. That is the estimate, not a number you then turn into one. ✓ WASTE THAT MATCHES YOUR PATTERN Straight lay 10%, diagonal 15%, herringbone 18%. Square footage and box count re-derive the moment you switch pattern. ✓ THE SETTING MATERIALS NOBODY ELSE CALCULATES Thinset by trowel notch. Grout by the real formula: tile size, joint width, depth and grout type. Backer board, screws and tape. Liquid vs sheet waterproofing. Leveling clips, silicone, sealer, movement joints and mastic. ✓ IT TELLS YOU WHEN SOMETHING IS WRONG Sanded grout in a 1/16" joint, a half-offset on 12x24, mastic in a shower: it says so, and names the standard. ✓ NEW IN 1.2 ✓ Tile Lippage & Warpage Check: the lippage ANSI allows for your tile and the running-bond joint ✓ Floor Deflection Check: joists pass L/360 for porcelain or L/720 for stone? ✓ Deck Mud: shower pan mortar bed, thickness at the walls and 80 lb bags ✓ Regrout: feet of joint, new grout or epoxy kits, and the hours ✓ Tile Baseboard: base pieces, or floor tiles to rip into strips ✓ Self-leveler: bag range from the maker's chart, shallow and deep points, waste ✓ THE QUESTIONS PEOPLE ACTUALLY ASK • How much tile for a shower? Walls, pan, curb and niche • How much tile for a kitchen backsplash or an accent wall • Square feet to boxes for 12x12, 12x24, 24x24 and 24x48 tile • How much grout and thinset for my tile size, joint and trowel notch • Floor tile, wall tile and plank tile in one app, in feet or metric ✓ 44 CALCULATORS, ALL FREE, FOREVER FLOORS: floor tile, plank tile, large format (12x24, 24x24, 24x48), diagonal & herringbone, mosaic & sheet, layout & cut planner, multi-room flooring (LVP, laminate), heated floor mat, self-leveler, stair & riser, transitions & trim, floor deflection, tile baseboard. WALLS & SHOWERS: backsplash, shower walls, shower pan & curb, niche & bench, tub surround, wainscot, fireplace, accent wall, wall prep, deck mud. SETTING MATERIALS: thinset, grout, backer board, waterproofing, leveling clips, silicone, grout sealer, movement joints, mastic, tile weight, spacers & joint size, lippage & warpage, regrout. COSTS & BUSINESS: material cost, labor, markup & margin, customer quotes, PDF estimates, shopping list, job cost tracker, tile removal & debris. Plus reference screens for pattern waste, trowel notches, grout joints and converters. ✓ NO SIGNAL NEEDED Everything runs on the phone. No account, no sign-in. Supply houses and basements are where signal dies. ✓ FEET, INCHES AND FRACTIONS, OR METRIC Type 12' 6-1/2" the way you read the tape. ✓ FOR THE TRADE Save jobs, keep your own price book, and send itemised quotes with setting materials on their own line. PRO CONTRACTOR: ONE PAYMENT, NO SUBSCRIPTION Unlimited saved projects, branded PDF quotes with your logo and no watermark, CSV price book import and export, markup and labor profiles, spec templates, home-screen widgets. Or try Pro free for 24 hours with one short video. All 44 calculators stay free forever. Pro unlocks saving, branding and exporting. Coverage figures and waste percentages are planning defaults. The manufacturer's chart and TCNA guidance always govern. Also on the web at smarttilecalculator.com.