About US Calculator

US Calculator is a collection of 217+ free online calculators for the United States - covering mortgages, loans, taxes, paychecks, retirement, savings, health, construction and math.

Our goal is simple: give you a fast, trustworthy answer without sign-ups, paywalls or clutter. Every calculation runs entirely in your browser, so your numbers never leave your device and nothing is stored.

How we keep things accurate

Financial-math calculators (mortgage, loan, compound interest, amortization) use exact, standard formulas. Tax and benefit calculators use figures published by the Internal Revenue Service (IRS) and the Social Security Administration (SSA) for the current tax year. Health tools follow WHO and NIH guidance. We update values when the official numbers change.

Not professional advice

The calculators provide estimates for general information only. They are not professional financial, tax, investment, medical or legal advice. For decisions that matter, consult a qualified professional.

How it is funded

US Calculator is free and supported by advertising. Ads never affect your results.