About the Author

Miguel Iglesias Valenzuela

Miguel Iglesias Valenzuela is the creator and person responsible for this project. He develops and maintains the tools and resources available on this site and reviews the content to keep it useful, clear, and up to date.

Project responsibility

Which calculators are published and how they are verified against technical references.
Corrections to tools and content — reported errors are prioritized (see Contact).
The privacy choices described in the Privacy Policy.

How IngCalc tools are developed

Every tool on this site follows the same development process. The goal is to produce a calculator that a practitioner can trust — not just one that produces a number.

Calculation engine. Each tool has a standalone calculation function separated from the page. The engine is pure math: documented inputs, documented outputs, no side effects. This separation means the logic can be tested independently of the UI.
Input validation. Tools reject unreasonable inputs (negative lengths, zero voltages, out-of-range power factors) and explain what went wrong. The goal is to prevent nonsensical results rather than silently returning them.
Formula transparency. Every page shows the exact formula used — not a summary, not a description, but the mathematical expression. Users can verify the formula against the standard it references.
Constants from named sources. Conductor resistances come from NEC Chapter 9 tables. Duct friction factors follow ASHRAE methods. Bolt torque values come from ISO 898 / VDI 2230. No constant is arbitrary.
Assumptions documented. Every model makes assumptions — steady state, linear behavior, standard conditions. These are listed on the page so the user can evaluate whether they apply to their situation.
Limitations stated honestly. If a tool does not cover a case — aluminum conductors, variable-frequency drives, extreme temperatures — the page says so. A limitation is not a defect; it is information the user needs.
Automated testing. Each engine is verified against reference values using mathematical assertions. When a test fails, the tool is not published until the discrepancy is explained and resolved.
Ongoing maintenance. Tools are reviewed when the underlying standards change. Reported errors are fixed before new tools are added. Every page shows a last-updated date.

How to report a problem

If you find a calculation error, a broken tool or content that is wrong, the fastest path is Contact. Include the tool name, your inputs, the result you got and — if possible — the result you expected with a reference. Calculation errors are fixed before anything else.

Editorial independence

The site is funded by advertising. Advertisers have no influence over calculation methods, tool content or editorial decisions — see the Advertising Disclosure.

Back to About IngCalc.