Bathroom Tile Calculator
Calculate how many tiles you need for your bathroom floor, walls, and shower. Supports different tile sizes for each area.
Last updated: January 9, 2026
Enter Your Measurements
Room Dimensions
Presets:
Areas to Tile
Floor
Walls (4 walls minus door/window)
Shower Area (separate 3-wall enclosure)
Floor Tile Settings
Enable cost estimate
Results
44
total tiles needed
40 sq ft
Floor
Area:
40 sq ft
Tiles:
44 tiles
Boxes:
~4 boxes
Calculation Steps
Floor Area: 5 × 8 ft= 40 sq ft
Floor Tiles: 40 sq ft ÷ tile area= 44 tiles
Privacy First - All calculations in your browser Industry-standard formulas
How to Use the Bathroom Tile Calculator
- Enter your bathroom dimensions — Measure length, width, and ceiling height. Use the presets for common bathroom sizes.
- Select areas to tile — Choose floor, walls, shower, or any combination. Each area can use different tile sizes.
- Configure tile settings — Pick tile sizes for floor and walls. Larger tiles (12×12) work great on floors — subway tiles (3×6) are the go-to for walls.
- Adjust for openings — Enter door and window dimensions to deduct from wall area. The calculator subtracts these automatically.
- Review results — See tiles needed for each area, plus boxes to purchase. Enable cost estimate for budget planning.
How We Calculate
Floor Tiles = (Length × Width) ÷ Tile Area × (1 + Waste%)
Wall Tiles = (Perimeter × Height - Door - Window) ÷ Tile Area × (1 + Waste%)
Example: Full Bath (5×8 ft)
- • Floor: 5 × 8 = 40 sq ft
- • Perimeter: 2 × (5 + 8) = 26 ft = 312 inches
- • Wall area: 312" × 96" = 29,952 sq in = 208 sq ft
- • Minus door (32×80): 208 - 17.8 = 190 sq ft
- • With 10% waste: 40 × 1.1 = 44 sq ft floor, 190 × 1.1 = 209 sq ft walls
Waste percentage per TCNA Handbook recommendations. Learn more →