The box label is the bridge between an area estimate and an orderable package. Similar-looking products can contain different piece counts, face dimensions, coverage statements, batches, or variants. TileCalc uses only tile width, tile height, and an optional whole number of pieces per box. Read those values from the exact product being considered and keep a label photo or written note so the estimate can be checked before purchase.
Match the dimensions to the calculator fields
Find the stated face width and height, not thickness, carton dimensions, or a marketing family name. Confirm whether values are in inches, centimetres, or millimetres and select that system before typing. A label such as 12 × 24 may be a nominal description while actual manufactured dimensions differ; use the values relevant to the supplier’s coverage information and ask when the label is ambiguous. TileCalc deliberately does not add grout-joint width to each tile. Joints, edge cuts, orientation, and layout determine installed coverage in ways that a simple area division cannot represent honestly.
Reconcile pieces, boxes, and any coverage statement
Enter pieces per box only when the label gives a clear whole-piece count for that exact item. TileCalc divides the required purchase tiles by this number and rounds upward, then reports both boxes and pieces actually purchased. If the carton also lists coverage, compare it independently: multiply the stated face area by piece count and note why a small difference may exist, but do not silently replace one source with another. Check every carton for matching product code, size, colour, finish, calibre, shade or batch information important to the project. Price per box is optional and user-entered; the calculator performs no stock or price lookup.