Tile Calculator
Calculate the number of floor or wall tiles, full boxes, and bags of thinset mortar with cutting waste allowances.
Enter Your Dimensions
US • ftHow We Calculated This
• You will need approximately 3 bags (50 lb) of modified thinset mortar.
• Use tile leveling clips and wedges on large format tiles (12"x24" or larger) to eliminate lippage.
Formula & Volumetric Method
Tile Count = (Area ÷ Single Tile Area) × (1 + Waste Factor). For straight lay, use 10% waste; for diagonal or herringbone patterns, use 15-20% waste.
Calculations are performed strictly using standard civil engineering constants. Volumetric outputs are normalized to true compaction rates, ensuring purchased quantities match jobsite yields.
Jobsite Engineering Guidelines
- Always order 10% extra for straight layouts and 15% extra for diagonal, diamond, or herringbone patterns to account for cut edge offcuts.
- Save at least one full sealed box from the same dye lot in case of plumbing access repairs or future cracked tiles.
- Subfloor deflection must not exceed L/360 for ceramic tile or L/720 for natural stone under TCA guidelines.
Frequently Asked Questions
How accurate is the Tile Calculator for ordering materials?
Our calculations match standard store packaging sizes in the US, Canada, UK, and Australia. We include a safety waste buffer (default 8% to 12%) so you do not run short due to uneven ground or spillage.
Why should I add extra for waste when ordering?
Uneven ground, cutting scrap, and leftover mix in the wheelbarrow or mixer drum consume an extra 5% to 15% of material. Ordering only the exact measurement usually leaves you short, which can lead to expensive extra delivery fees.
Does this calculator support both Imperial and Metric units?
Yes. You can switch between US Customary (feet, inches, cubic yards, pounds), Canadian units, UK metric, and Australian standards using the region selector in the header or the unit dropdown on each input.