Written by Umasankar Maity
B.Tech in Electrical Engineering · 11+ years industrial experience
Reviewed by the ElectroMechCalc editorial team.
Last updated: 13 July 2026
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 (EPF, SIP, CAGR, FD, RD, PPF, NPS, Gratuity, Income Tax) are built from the calculation methods published by the relevant bodies — such as EPFO for EPF and gratuity, and standard compound-interest and CAGR formulas used across the mutual fund industry — rather than from third-party summaries.
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 or updated page carries an author byline, a "reviewed by" note, and a last-updated 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 If you spot an error, an outdated constant, or a calculation that doesn't match a current standard, please tell us — we treat correction reports as a priority and update the page, noting the change, as soon as we've verified it.
How Often We Update
Pages are reviewed periodically and whenever a relevant standard, tax rule, or interest rate changes (for example, EPF interest rates, income tax slabs, or a revised IEC/BIS clause). The "Last updated" 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.