Effective date: 15 July 2026
Calculation aid only
The tools provide general mathematical outputs from the values supplied. They do not constitute engineering design, surveying certification, construction instruction, quantity guarantee, regulatory advice or approval for work.
Your responsibility
Before relying on a result, independently verify inputs, units, coordinate systems, point order, datums, direction conventions, tolerances, rounding, material properties and project requirements. Use competent professional judgement and controlled design information.
No warranty
The site is provided on an “as available” basis without a guarantee that every result is suitable for a particular project. To the fullest extent permitted by law, the operator is not responsible for loss arising from reliance on an unchecked result.
Local records
Browser-local drafts, saved calculations and delivery entries are convenience records, not a controlled backup or verified weighbridge, survey or inspection record. Export important information and follow the project's document-control procedure.
Permitted use
You may use the public calculators for lawful professional and personal work. Do not attempt to disrupt the service, misrepresent outputs as certified, or use the site in a way that infringes another person's rights.