A bathroom tile layout planner calculates exactly how many tiles you need including waste for cuts, edges, and breakage. Enter your room dimensions, tile size, and layout pattern to get a complete materials estimate.
Room & Tile Specifications
Tile Estimate
Enter room and tile dimensions.
How to Plan a Bathroom Tile Layout
A well-planned tile layout ensures tiles are centered, cuts are minimized, and the result looks professional. Rushing the planning process is the most common cause of tile projects going wrong.
Step 1: Find the Center
Most tile layouts start from the center of the room and work outward. Find the center by snapping chalk lines from the midpoints of opposite walls. Starting from the center ensures equal-sized cuts at both walls. Starting from one corner often results in narrow slivers on the opposite end that look unprofessional.
Step 2: Plan for Doorway Cuts
Check what size cut tile will appear at the doorway entrance — this is the most visible spot in the room. If the cut produces a very thin sliver (less than half a tile width), shift your starting point by half a tile so the doorway cut is at least a half tile.
Step 3: Account for Waste
The calculator adds a waste factor automatically based on your pattern. Buy exactly the amount shown — never less. If you run out mid-project and the tile is discontinued or from a different lot, the color won't match perfectly. Leftover tiles are valuable for future repairs.
Diagonal Patterns
Diagonal (45-degree) tile patterns require cutting every perimeter tile at 45 degrees, dramatically increasing waste. Budget 20-25% extra and double-check your waste factor when choosing a diagonal layout for a bathroom.
FAQ
Is this tile layout planner free?
Yes, completely free with no signup required. Calculate tile needs for as many rooms as you like — all calculations run locally in your browser.
How much tile waste factor should I add?
A 10% waste factor is standard for straight (non-offset) tile layouts. Use 15% for 1/3 or 1/2 brick offset patterns. Use 20-25% for diagonal (45-degree) patterns due to more cut tiles at the perimeter. For expensive natural stone or large-format tiles, consider 15% even for straight layouts to account for breakage.
What is the 1/3 offset tile pattern?
The 1/3 offset (running bond) pattern staggers each row by one-third of the tile length instead of one-half. This creates a more subtle stagger than a 50% offset and is less prone to lippage (uneven tile edges) with large-format tiles. It's a popular choice for rectangular subway tiles and 12×24 or larger floor tiles.
How do I calculate tiles for an L-shaped or irregular room?
For irregular rooms, break the space into rectangles. Calculate tiles for each rectangle separately, then add the totals. Alternatively, measure the total square footage by measuring the overall bounding rectangle and subtracting any excluded areas (like a bathtub footprint). Add an extra 5% for complex cuts around corners.
How do I determine the grout joint width for my tile?
Rectified tiles (precisely cut with very square edges) can use joints as narrow as 1/16 inch. Standard floor tiles commonly use 1/8-inch joints. Large-format tiles (24×24 and up) typically use 1/4-inch joints to accommodate minor warping. Natural stone tiles usually need 1/4 to 3/8-inch joints for consistent alignment.