Effective date: 13 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.
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.