3×6 Inch Subway Tile Calculator & Layout Planner

Enter your room dimensions in Step 1 to generate a customized 3×6 inch subway layout with precise cut calculations and carton estimates in Step 2.

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Coverage & Packaging Reference (3 × 6 inches)

Calculated with standard cartons of 80 tiles per box (0.93 sq ft/box) and 10% cutting allowance.

Room Area (sq ft)	Net Tiles	Total (+10% Waste)	Boxes to Buy	Purchased Area (sq ft)
50 sq ft	400 tiles	441 tiles	6 boxes	60 sq ft
100 sq ft	800 tiles	881 tiles	12 boxes	120 sq ft
150 sq ft	1200 tiles	1320 tiles	17 boxes	170 sq ft
200 sq ft	1600 tiles	1761 tiles	23 boxes	230 sq ft
250 sq ft	2000 tiles	2200 tiles	28 boxes	280 sq ft
300 sq ft	2400 tiles	2640 tiles	33 boxes	330 sq ft

Attic Stock Recommendation: Trade practice recommends ordering 1 extra unopened carton (10 sq ft) to preserve matching production dye lots for future repairs.

Craftsman Trade Advice

Essential technical rules from master tilers for durable tile installations.

Substrate Prep

Plumb Wall Prep for Subway Backsplashes

Classic 3×6 inch subway tiles accentuate wall irregularities. Ensure drywall studs are plumb and flat, and apply moisture-resistant primer behind kitchen and bath wet zones.

Sightline

Center Courses on Cooktop or Vanity Mirror

Snap vertical centerlines on the cooktop or bathroom sink. Balancing the 50% staggered brick layout ensures end cuts into corners exceed 2 inches on both sides.

Joint Physics

1/8 Inch Spacers & Flexible Countertop Caulking

Use 1/8 inch tile spacers for traditional subway joint spacing. Never caulk the seam between bottom tile courses and countertops with hard grout; apply 100% silicone sealant.

Frequently Asked Questions

How many 3×6 inch tiles are in one square foot?

There are exactly 8 tiles of 3×6 inches in one square foot without joints. With standard 1/8 inch joints and 10% cutting waste, plan for 9 tiles per square foot.

Can 3×6 inch tiles be laid in a 50% brick bond pattern?

Yes, 3×6 inch tiles are the classic architectural standard for 50% running bond brick layouts. Because short 6-inch tiles have no center crowning, joints stay perfectly flush.

What grout joint width should I use for 3×6 inch subway tiles?

A 1/16 to 1/8 inch grout joint width is standard for 3×6 subway tiles. A 1/16 inch joint gives a crisp historic look, while 1/8 inch provides classic traditional charm.

Are 3×6 inch tiles suitable for floors or walls?

Standard glazed 3×6 ceramic subway tiles are designed for vertical walls and backsplashes. However, dense porcelain subway tiles can be installed on light residential bathroom floors.

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