Disclaimer

The calculators and content on this site provide general information for planning, estimating and learning. Results are estimates. They are not a design check and do not replace a qualified engineer or your local building/electrical code, and using them does not create an engineer–client or adviser–client relationship.

Results depend entirely on the numbers you enter and on the formulas, standards and sources as checked on the date shown on each page. Standards are revised, local codes differ from country to country, and real materials, equipment and site conditions vary. Some inputs, such as a dry volume factor or a wastage allowance, are common practice rather than a figure from a standard, and are labelled so. Always have important work designed, checked and signed off by a qualified professional under the code that applies where you build or install.

The tools are not for life-critical decisions. We do not publish structural design or code compliance checks, medicine dosing, or well-control calculations.

Where a page cites a standard or manual, we cite the version we read; it is not a copy of the standard, and the published standard is the one that counts.

The numbers filled in when a calculator opens are examples; type your own.

GlanceDesk Compute is not affiliated with any standards body, manufacturer, professional institution or government body. Names of standards, programmes and organisations (for example BIS, ENERGY STAR or the US Army) are used only to identify the sources we cite; they belong to their owners and do not mean those owners endorse this site.

Last updated 2026-10-28.