# CalcVortex — llms.txt
# https://calcvortex.com

## About
CalcVortex provides free online calculators for finance, health, math, unit conversions, and everyday calculations. All tools are free, require no signup, show their formulas, and work on any device.

## Content Types
- **Calculators** (/calculator/): Interactive tools with formula explanations. Categories: Financial, Health, Conversion, Math, Salary, Home, Science, Date/Time.
- **Blog Posts** (/blog/): Guides explaining formulas, financial concepts, and how-to content related to calculations.
- **Category Archives** (/calculators/): Browse calculators by category with descriptions.

## Key Pages
- Homepage: https://calcvortex.com/ — Calculator search and category browser
- Financial Calculators: https://calcvortex.com/calculators/financial/
- Health Calculators: https://calcvortex.com/calculators/health/
- Conversion Calculators: https://calcvortex.com/calculators/conversion/
- Math Calculators: https://calcvortex.com/calculators/math/

## Data Sources
- Tax brackets: IRS Publication 15-T (updated annually)
- BMI/health formulas: WHO and CDC published standards
- Unit conversions: NIST reference tables
- Financial formulas: Standard actuarial and compound interest formulas

## Update Frequency
- Tax calculators: Updated annually (January)
- All calculators: Reviewed quarterly for accuracy
- New calculators: 2-5 added per week

## Contact
- Website: https://calcvortex.com
- Contact: https://calcvortex.com/contact/