Convert Any Tile Size
Instantly convert tile dimensions between inches, centimeters, millimeters, and feet. Load any standard tile format — 12×24, 6×6, 24×24, subway — and calculate exactly how many tiles you need for your room.
Tile Size Converter & Counter
Convert any tile size between units and estimate tile count for your room
Converted Dimensions
12" × 24"
Original (inches)
30.48cm × 60.96cm
Converted (centimeters)
Tile Area
2.000 ft²
1858.0 cm²
Tiles / ft²
0.50
tiles per square foot
Room Area
120.0 ft²
11.15 m²
Tile Grid
10 × 6
columns × rows
Tile Count Estimate
60
Base count
66
With 10% waste
Quick Conversion Reference
Quick Conversion Cheat Sheet
Multiply inches by 2.54 to get Centimeters (cm)
Convert imperial specs to metric instantly. Example: 12 inches is exactly 30.48 cm.
Multiply CM by 10 to get Millimeters (mm)
Useful for precise layout tolerances. Example: a 30.5 cm width equals 305 mm.
Nominal size factors in the grout line
The actual physical tile is usually slightly smaller than stated (e.g. 11-7/8" instead of 12").
Calculating Tiles For Floor Layouts?
Estimate the exact amount of tiles needed for floors including waste factors and boxes with our Floor Tool.
Complete Reference
Standard Tile Sizes in Inches, CM & MM
Every common tile format with converted dimensions and typical applications.
| Size (in) | MM | CM | Typical Use | Grout Joint |
|---|---|---|---|---|
| 3×6" | 76×152 | 7.6×15.2 | Subway backsplash, accent walls | 1/16"–1/8" |
| 4×4" | 102×102 | 10.2×10.2 | Classic bathroom walls, vintage floors | 1/8" |
| 6×6" | 152×152 | 15.2×15.2 | Bathroom floors, accent walls | 1/8"–3/16" |
| 8×8" | 203×203 | 20.3×20.3 | Mudroom, laundry, classic floors | 1/8"–1/4" |
| 12×12" | 305×305 | 30.5×30.5 | Standard floor tile, most rooms | 1/8"–3/16" |
| 12×24" | 305×610 | 30.5×61 | Most popular modern floor tile | 3/16"–1/4" |
| 18×18" | 457×457 | 45.7×45.7 | Large open-plan floors | 1/4"–3/8" |
| 24×24" | 610×610 | 61×61 | Commercial, open-plan modern | 3/16"–3/8" |
| 24×48" | 610×1219 | 61×121.9 | Ultra-modern minimal grout look | 1/16"–1/8" |
| 4×12" | 102×305 | 10.2×30.5 | Modern backsplash, wall planks | 1/16"–1/8" |
| 6×24" | 152×610 | 15.2×61 | Wood-look plank floors | 1/16"–1/8" |
| 8×36" | 203×914 | 20.3×91.4 | Wood-look plank floors | 1/16" |
Quick Reference
Unit Conversion Cheat Sheet
1 inch =
2.54 cm
25.4 mm
0.0833 ft
1 foot =
30.48 cm
304.8 mm
12 in
1 cm =
0.3937 in
10 mm
0.0328 ft
1 mm =
0.03937 in
0.1 cm
0.00328 ft
Specific Size Calculators
12×24 Calculator
Most popular format — landscape vs portrait, offset patterns
24×24 Calculator
Large format with LFT mortar guide and weight estimator
12×12 Calculator
Multi-room support, box optimizer
6×6 Calculator
Checkerboard, diagonal, accent patterns
8×8 Calculator
Classic floor tile with diagonal waste table
18×18 Calculator
Large tile with substrate prep checklist
Converter FAQs
Common questions about tile conversions and sizes.
How do I convert tile size from inches to centimeters?▼
Multiply the measurement in inches by 2.54. For example, a 12-inch tile is 12 × 2.54 = 30.48 cm. A 12×24-inch tile is 30.48×60.96 cm.
What tile sizes are available in standard dimensions?▼
The most common standard sizes are 3×6, 4×4, 6×6, 8×8, 12×12, 12×24, 18×18, 24×24, and 24×48 inches. European tiles use metric sizes like 30×30, 45×45, 60×60, and 60×120 cm.
How do I calculate how many tiles I need for a room?▼
Divide the room area (in ft²) by the tile area (in ft²). Then add a waste buffer — 10% for straight lay, 15% for diagonal, 5–10% for offset patterns. Always round up to the nearest whole number.
What's the difference between nominal and actual tile size?▼
Nominal size includes the standard grout joint. Actual size is the physical tile measurement. For example, a '12×12' nominal tile may actually measure 11-7/8 inches by 11-7/8 inches (11.875 inches) because the 1/8-inch grout joint is factored into the stated size.
How many 12×24 tiles are in a square foot?▼
A 12×24-inch tile has an area of 288 in² = 2 ft². So it takes exactly 0.5 tiles per square foot, or 1 tile covers 2 ft². For a 100 ft² room you need about 50 tiles (plus waste).