Our Editorial Purpose
ElectroMechCalc publishes free electrical, mechanical, and financial calculators, along with short explanations of the formulas behind them. This Editorial Policy sets out how we research, write, verify, and maintain that content, so visitors know what standard of accuracy to expect and how to raise a concern if something looks wrong.
How We Source Our Formulas
Every calculator is built around a published, standard formula rather than an internally invented shortcut. Where an industry standard exists, we reference it directly:
- IEC (International Electrotechnical Commission) — for transformer, cable, and general electrical engineering standards.
- IEEE (Institute of Electrical and Electronics Engineers) — for motor, power system, and equipment reliability standards.
- BIS (Bureau of Indian Standards) — for India-specific electrical safety codes and equipment ratings.
- NEC (National Electrical Code) — for cable ampacity and installation practice, where relevant to a calculator.
Financial calculators — investment and savings tools (SIP, CAGR, compound and simple interest, FD, RD, inflation), retirement and benefit tools (EPF, PPF, NPS, gratuity), loan and EMI calculators, and tax and salary tools (income tax, GST, HRA exemption, salary/CTC) — use standard interest, compounding, CAGR, and EMI formulas. Where a calculator follows a country-specific scheme or tax rule (for example, EPF, gratuity, or income tax in India), it is built from the officially published rules for that scheme, and the page states which country's rules it applies.
Who Writes and Reviews Our Content
Calculators and articles are drafted by our named author, who holds a formal engineering qualification and 11+ years of industrial experience, and are cross-checked for formula accuracy and standards alignment before publishing. Every published page carries an author byline, a "reviewed by" note, and a "Last reviewed" date, so you can see who is accountable for the content and when it was last checked.
Accuracy & Corrections
We test each calculator against known reference examples before publishing and re-check it whenever the underlying formula or standard is revised. That said, no automated tool is a substitute for professional engineering judgment on safety-critical or code-compliance decisions, or for licensed financial advice on high-value decisions. If you spot an error, an outdated constant, or a calculation that doesn't match a current standard, please tell us — we treat correction reports as a priority and update the page as soon as we've verified the correction.
How Often We Update
Pages are reviewed periodically and whenever a relevant standard, tax rule, or interest rate changes (for example, a published interest rate, a change in tax slabs, or a revised IEC, IEEE, or BIS clause). The "Last reviewed" date shown on each page reflects the most recent substantive review, not just a cosmetic edit.
Advertising & Independence
ElectroMechCalc is supported by display advertising, which keeps every calculator free to use. Advertising has no influence on which formulas we use, what results a calculator returns, or how we describe accuracy and limitations — editorial content and ad placement are handled separately.
Questions or Corrections
If you have a correction, a source you'd like us to check, or a question about how a specific calculator works, please reach out through our Contact page. See also our About Us page and Disclaimer for related information.