Calculator Verification Statement
Ensuring accuracy, transparency, and trust in every calculation
The purpose of this verification statement is to ensure users that all calculators on CalculatorHub are accurate, formula-based, and verified by standard references. We are committed to providing reliable calculation tools that you can trust for educational, professional, and personal use.
Formula Sources
- • Standard mathematical formulas from established textbooks
- • ISO and NIST standards for unit conversions
- • Peer-reviewed statistical methods
- • Industry-standard algorithms for complex calculations
- • Standard financial formulas (PMT, FV, PV, etc.)
- • Industry-standard loan and mortgage calculations
- • Government financial guidelines where applicable
- • Recognized investment calculation methods
- • WHO (World Health Organization) standards for BMI
- • Medical research-based formulas
- • Established health and nutrition guidelines
- • Peer-reviewed health calculation methods
- • ISO 80000 standards for measurements
- • NIST (National Institute of Standards) conversion factors
- • Internationally recognized conversion constants
- • Official currency exchange rate APIs
Verification Process
Research Original Formulas
We research and identify authoritative sources for each formula, including textbooks, industry standards, and recognized guidelines.
Implementation
Formulas are carefully implemented in code with proper validation, error handling, and edge case considerations.
Testing
Each calculator is tested with known examples and edge cases to ensure accurate results across various scenarios.
Validation
Results are validated against external trusted sources, including manual calculations and professional tools.
Review
Final manual review and quality assurance to ensure accuracy, usability, and proper documentation.
Expert & Reviewer Involvement
Calculators are reviewed by our internal development team with expertise in mathematics, software engineering, and quality assurance. Financial and health calculators use formulas from authoritative sources and are intended for educational purposes only.
We are committed to transparency. As we grow, we plan to involve subject matter experts (mathematicians, financial analysts, health professionals) in the verification process for specialized calculators.
Limitations & Disclaimers
Health calculators (BMI, calorie, body fat, etc.) are provided for general guidance and educational purposes only. They are not a substitute for professional medical advice, diagnosis, or treatment. Always consult with qualified healthcare providers for medical decisions.
Financial calculators are tools for estimation and educational purposes. They do not constitute financial, investment, or tax advice. Results may vary based on individual circumstances, local regulations, and market conditions. Consult with qualified financial advisors for personalized financial planning.
Results may vary slightly depending on rounding rules and precision settings. We use standard rounding methods, but different institutions may use slightly different approaches. For critical calculations, verify results with multiple sources.
Currency conversion rates are sourced from third-party APIs and may not reflect real-time market rates. Rates are for informational purposes only and should not be used for actual currency transactions without verification.
Versioning & Updates
All calculators are reviewed every 6 months to ensure formula accuracy and updated data. When formulas are updated or improved, we document the changes and update the verification status.
If you notice any discrepancies or have concerns about calculation accuracy, please contact us immediately. We take accuracy seriously and will investigate all reports.
Calculator-Specific Verification Notes
BMI Calculator
Uses the standard BMI formula: weight (kg) / height (m)², based on WHO classification standards.
Loan & Mortgage Calculators
Use standard amortization formulas (PMT function) as used by financial institutions. Results match industry-standard loan calculators.
Unit Converters
Conversion factors are based on NIST and ISO standards. Temperature conversions use standard formulas (Celsius, Fahrenheit, Kelvin).
Statistical Calculators
Statistical formulas follow standard statistical textbooks and peer-reviewed methods. Results are verified against statistical software outputs.