I'm the founder of US Finance Calculators, where I build and audit 200+ free financial calculators covering mortgages, refinancing, auto and personal loans, student debt, taxes, and retirement for American households. My work sits where personal finance math meets plain-English explanation. I focus on the numbers behind everyday money decisions: how amortization really works, APR vs. interest rate, refinance break-even points, the true cost of carrying credit card debt, avalanche vs. snowball payoff, and how rules like the Truth in Lending Act and IRS guidelines shape the figures consumers see. For journalists, I can provide quick, calculator-backed examples with exact dollar figures, such as what a half-point rate drop saves on a typical 30-year mortgage or how long a minimum payment...