How sources are used
Preference is given to official standards, government guidance, primary documentation and relevant Australian industry sources. A source is used only for the convention or claim it can reasonably support. External calculators are cross-checks, not code or results copied into this site.
Tile calculator references
- National Tiles flooring tile area calculator — Australian area, waste and supplier box-coverage conventions.
- Show Tile tile calculator — exclusions, whole-tile quantities and optional cost conventions.
- Johnson Tiles calculator — millimetre tile-dimension convention.
The formula was researched on 10 August 2026. It is scheduled for quarterly review or earlier if supplier methods or the implementation change materially.
Website quality references
- Web Content Accessibility Guidelines 2.2 — accessibility acceptance target.
- OAIC privacy by design guidance — privacy assessment approach.
- OWASP Application Security Verification Standard — risk-based security baseline.
- Core Web Vitals — performance measurement and field-monitoring guidance.
- Google people-first content guidance — useful-content review criteria.
Source boundaries
Product dimensions, packaging, pricing and technical guidance can change. Visitors should confirm current supplier information before ordering. Inclusion on this page is not an endorsement in either direction, and source publishers are not responsible for this website’s implementation.