Bathroom/Toilet Tile Quantity Calculator

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Please check.

  • Since the wall may not be vertical, you must measure and enter the longest of the three locations (top, middle, and bottom] to prevent tile shortages.
  • If there is a shelf or a niche space inside the wall, the amount of tile required increases by the angled area, so you must secure additional quantities.
  • Floor tiles have a lot of diagonal cutting loss to create the drainage slope, so it is recommended to allow a margin rate about 5% more generously than wall tiles.
  • Since slight color differences may occur if the production lot numbers are different, it is standard practice to order the entire quantity at once instead of placing additional orders during construction.
  • Since actual measurements vary depending on whether the work is being done by overlaying tiles on existing ones or by completely removing the old ones, please enter the exact dimensions according to the site conditions.

Bathroom Tile Calculator, Complete Guide to Calculating Tile Requirements and Box Quantities for Bathroom Remodeling

Tiles must be ordered accurately in a single order to prevent color discrepancies. We calculate the required quantities for walls and floors separately, taking into account the bathroom structure and the area of ​​the doors and bathtub. Start waste-free construction with smart material ordering before precise measurements!

Formula for calculating the total amount of tiles required for a bathroom

For the bathroom, you must calculate the four walls and one floor, excluding the ceiling. It is important to calculate the exact area in square meters (m²] and then convert it into the quantity of boxes based on tile specifications.

1. Construction Area Calculation Formula
Wall Area = {(Width + Length] × 2 × Height} - Opening Area Floor Area = Width × Length

Calculate the effective area for actual tile installation by subtracting the area of ​​doors and windows from the total wall area.

2. Required Quantity and Box Conversion
Quantity Required = (Construction Area / Area per Tile] × (1 + Markup Rate] Number of Boxes Ordered = Quantity Required / Quantity per Box (Round up result]

Since tiles are ordered in boxes rather than by the piece, we always round up the calculated quantity to ensure a margin.


Standard Application Guide by Tile Size

These are standard tile specifications selected based on bathroom size and design concept.

Applicable target Recommended specifications (mm] characteristic Remarks (Field Terms]
Standard wall tiles 300 x 600 Most common and fast to install 36 tiles
Standard floor tiles 300 x 300 Optimized for slope control 300 angles
Large/Luxury Tiles 600 x 600 more Minimized grout lines, hotel feel Porcelain/Polishing
Kitchen/Point 100 x 300 / mosaic For design emphasis strip tiles
note.

For safety, it is very important to choose floor tiles with anti-slip features.


Detailed Guide to Calculator Input Items

Please enter the actual bathroom measurement data in mm to calculate the required quantity accurately.

  • 1. Bathroom width/length/height

    Enter the floor width and length, and the height to the ceiling (before dome installation].

  • 2. Tile Specifications

    Enter the dimensions of the tiles to be installed on the walls and floor, respectively. (e.g., Wall 300x600, Floor 300x300]

  • 3. Surcharge rate

    Considering cutting loss, 10% is generally recommended. If the design is complex, set it up to 15%.

  • 4. Installation of identical tiles

    If you check the box to install the walls and floor with the same tiles, the combined quantity will be calculated.


Essential Checklist for Fail-Free Construction

This is a checklist to prevent construction from being halted on-site due to a shortage of materials.

  • The Law of 3-Point Measurement

    Walls may not be vertical. To ensure safety, measure at three points—top, middle, and bottom—and determine the area based on the longest point.

  • Distinction between Overlay vs. Complete Demolition

    The actual dimensions vary by approximately 10 to 20 mm depending on whether it is installed over existing tiles or after removal.

  • Floor slope and loss rate

    Since floor tiles are often cut diagonally for drainage, please allow 3 to 5 percent more for floor tiles than for walls.

  • Zendai and Niche Space

    If there are shelves (zendai] or wall-mounted storage cabinets (niches], do not forget that you will need more tiles for the angled area.


Frequently Asked Questions (FAQ]

  • Q. How many pyeong (㎡] can be covered with one box of tiles?
  • A. The standard 300x600 size is packaged so that one box covers approximately 1.44㎡ (0.44 pyeong]. Please check the square footage per box before ordering.
  • Q. How do I subtract the area of ​​doors or windows?
  • A. This calculator includes an opening deduction function. Typically, about 1.4 to 1.5 m² is automatically excluded per door.
  • Q. Why is it important to check the production date (Lot]?
  • A. Even for the same model, slight color differences (color variation] may occur if the production period (Lot] is different. Please be sure to check the same Lot number before installation.