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Every governing check in a Calcs.com calculator links back to the clause it’s based on. You don’t need to leave your calculation, or go looking through the standard yourself, to see exactly where a formula comes from.

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Formula Reference

Expand any result row in Summary — for example Moment Capacity — to open its Formula Reference panel. This shows:
  • The equation variable being calculated (for example M_d)
  • A References chip naming the governing clause, for example AS 1720.1:2010, Cl 3.2.1.1
  • The full equation as used in the calculator, including any conditional cases (for example a separate equation for I-joists)
  • The Checks result — the utilization ratio and what’s being compared (for example Bending Moment Demand is Greater than Bending Moment Capacity)
This is the fastest way to understand why a result passed or failed — the equation shown here is the one actually driving the number in Summary, not a general description of the check.
Formula Reference panel expanded under a Summary result, showing the References clause chip and the equation used

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Opening the full clause

Select the clause chip in References to open a side panel with:
  • The clause text, exactly as it reads in the standard (for example 3.2.1.1 Design capacity)
  • The equation and every defined variable, with cross-references to related clauses where the standard itself references them (for example see Clause 1.4.2.2)
  • The standard’s reproduction and copyright notice
Clause side panel opened from a calculator result, showing clause text, equation, defined variables, and a Share button A Share button in this panel copies a stable link to the clause — see Sharing a Clause Link.

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Viewing the full standard

Select View full standard in the side panel to open the same clause in the full Standards Library viewer, with its Table of Contents — see Browsing a Standard. This takes you out of the calculator and into the standard itself, useful when you want to read the surrounding clauses or trace a chain of cross-references.

Browsing a Standard

Navigate a standard’s table of contents and read a clause

Standards Licensing & Copyright

What the reproduction notice means for what you can do with the content