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Results from OneCalc are indicative and must be verified before professional use.
General accuracy
While we use exact SI factors and standard engineering formulas, OneCalc makes no warranty that any result is free from error or suitable for a specific purpose.
Engineering disclaimer
Solar, electrical and civil calculators are decision-support tools. Every design must be verified, stamped and approved by a licensed professional engineer in accordance with local codes and standards.
Financial disclaimer
Currency, crypto, ROI, payback and LCOE outputs are informational only and do not constitute financial, investment or tax advice. Exchange rates may be delayed.
File conversion
Conversions are performed in your browser on a best-effort basis. Always keep an original copy of any file before converting, compressing or editing it.
External links
OneCalc may link to third-party sites and data sources, including live exchange-rate providers. We are not responsible for their content, availability or accuracy, and rates or reference data obtained from them should be independently confirmed before use in a transaction or design submission.