Engineering calculators earn their keep by showing their method. The tools in this section state their formulas, their conventions and their limits on the page, from electrical sizing with the code tables named, to pipe flow, gearing, heat and circuit analysis.
They are estimators for design thinking, checking and learning. Anything that will be built, wired or loaded for real still needs a qualified engineer’s judgement and the governing code or standard, and each page says so where it matters.
More calculators for this section are finished and published in stages, and this page grows as they go live.