Data Sources & References
The foundation of our calculators relies on verified and recognized standards.
Finance and Economics
Financial calculators are built upon core economic formulas published by standard accounting and banking bodies. We do not provide real-time API-driven stock or currency rates, ensuring our deterministic formulas serve as educational tools.
Health and Fitness
Our health calculators reference formulas from organizations such as the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC). These include the standard BMI calculation and body fat estimation models.
AI and Technology
API pricing calculators reflect the documented pricing provided by providers like OpenAI, Anthropic, and other major LLM vendors as of their respective update dates. Always consult the official vendor documentation for up-to-the-minute enterprise pricing.