1. General Information Only
The content, calculators, formulas, and tools provided on eCircuitCalc (the “Website”) are for educational and informational purposes only. They are designed to help students, hobbyists, and professionals understand fundamental electronics concepts and perform quick reference calculations. Nothing on this Website constitutes professional engineering advice, a design specification, or a guarantee of circuit performance.
2. No Professional-Engineering Substitution
eCircuitCalc does not replace the judgment of a qualified electrical or electronic engineer. For any real-world project — especially those involving mains voltage, high power, safety-critical systems, regulated products, or commercial deployment — you should:
- Engage a licensed professional engineer for design review and sign-off.
- Verify all calculations independently using established references (e.g., manufacturer datasheets, IEEE/IEC standards, peer-reviewed literature).
- Perform appropriate bench testing under safe conditions before putting any circuit into service.
3. Accuracy and Limitations
We strive to present formulas and default values that are correct within their stated assumptions. However:
- Real components deviate from ideal models (tolerance, temperature coefficients, parasitics, aging).
- Our calculators assume idealised conditions unless a specific tolerance or derating factor is entered.
- Rounding, unit conversion, and floating-point arithmetic may introduce small numerical differences compared to hand calculations or specialised simulation tools (SPICE, PSpice, LTspice, etc.).
- Content may contain typographical or transcription errors despite our review process.
We make no warranty, express or implied, that any calculation result is error-free, complete, or fit for a particular purpose.
4. No Liability
To the maximum extent permitted by applicable law:
- eCircuitCalc, its operators, contributors, and affiliates shall not be liable for any direct, indirect, incidental, consequential, special, or punitive damages arising from your use of — or inability to use — the Website.
- This includes, but is not limited to: damaged or destroyed components, personal injury, property damage, data loss, lost profits, or project delays caused by reliance on any information, calculator output, or recommendation found here.
Your use of this Website is entirely at your own risk. By using the calculators or following any design guidance on this site, you acknowledge and accept this limitation of liability.
5. Safety Warning
Electrical work can be lethal. Circuits involving mains voltage (typically >50 V AC or >120 V DC), high-power switching, battery banks above safe discharge limits, or any installation connected to a building supply carry serious risks of electric shock, fire, and explosion. If you are not confident in your knowledge and skill level, do not build or modify such circuits. Always follow local electrical codes and safety standards (e.g., IEC 60950 / IEC 62368, NEC, BS 7671) as applicable in your jurisdiction.
6. External Links
The Website may contain links to third-party websites (component datasheets, standards bodies, video tutorials, forums, etc.). We do not control and are not responsible for the content, accuracy, availability, or practices of any external site. The inclusion of a link does not imply endorsement. You access external resources at your own risk.
7. Calculators Are Not Simulation Tools
The online calculators on eCircuitCalc implement closed-form equations and simplified models. They are not a substitute for circuit simulation software when you need to analyse transient behaviour, non-linear effects, thermal coupling, electromagnetic interference, or multi-domain interactions. For such analyses, use purpose-built tools (e.g., SPICE-based simulators, FEM solvers) and validate results experimentally.
8. Intellectual Property
All original text, formulas-as-presented, calculator code, and design on this Website are the property of eCircuitCalc unless otherwise attributed. Standard mathematical relationships (Ohm’s Law, series/parallel combinations, etc.) are not subject to copyright; however, our specific arrangement, commentary, and implementation may be. You may reference or link to individual calculator pages for personal or educational use with attribution.
9. Changes to This Disclaimer
We may update this Disclaimer from time to time. Material changes will be reflected by updating the “Last Updated” date above. Continued use of the Website after such changes constitutes your acceptance of the revised terms.
10. Contact
If you believe any content on eCircuitCalc is inaccurate or potentially misleading, please let us know via the Contact page so we can review and correct it promptly. For legal matters, use the same channel; we aim to respond within a reasonable timeframe.