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    USA calculators

    Calculators for the United States: federal income tax and paychecks, 401(k), Roth IRA, RMDs, Social Security, VA disability and CDs, plus FAA medical certificates and Part 117 duty limits for pilots.

    • 12 USA calculators
    • Across 2 categories
    • Free, no sign-up

    Aviation

    FAA Part 117 duty calculatorUS 14 CFR 117 limits: max FDP from Table B or C, flight time, unacclimated crew, extensions, split duty, reserve, 10 h rest and cumulative hours left.FAA Pilot Currency CalculatorUS 14 CFR 61.57 day and night passenger currency from your logbook, tailwheel, IFR currency with the catch-up window and IPC, and flight review.FAA Medical & Currency Expiry CalculatorUS FAA medical expiry by class, age and privileges, BasicMed, flight review, day and night passenger and IFR currency with grace period, and reminders.FAA ATP Hours CalculatorUS 14 CFR 61.159 ATP hours tracker: total, cross-country, night, instrument, PIC and multi-engine progress, simulator limits, R-ATP totals and the date you reach them.

    Money

    US Roth IRA calculator2026 limit and income phase-out, balance at retirement, catch-up from 50, and Roth vs taxable account vs traditional IRA.US 401(k) calculatorYour 401(k) at retirement with the employer match, 2026 IRS limits and catch-ups, Roth vs pre-tax, fees, tax saved and monthly income.US income tax calculator2026 federal tax, refund or amount owed and take-home pay, with 401(k), deductions, child credit, gains and FICA.US CD calculatorCertificate of deposit interest and maturity: APY or rate, any compounding, early withdrawal penalty, tax, inflation, a savings account compared and a CD ladder.US paycheck calculatorTake-home pay per paycheck: 2026 federal withholding from your W-4, FICA, your state and local rate, 401(k), benefits and bonus checks.US RMD calculatorRequired minimum distribution for this year from your IRA, 401(k) or 403(b): SECURE 2.0 starting age, IRS factor, deadline, double-RMD warning, penalty and future RMDs.US Social Security calculatorYour monthly benefit at every claiming age from 62 to 70, break-even ages, lifetime totals, COLA, the earnings test, spouse and survivor amounts.US VA disability calculatorCombined VA rating step by step with the bilateral factor, 2026 monthly pay with dependants, the next 10% and back pay.

    Also useful in USA

    General calculators that work anywhere, picked because people in USA use them often.

    Mortgage calculatorMonthly payment with tax, insurance, PMI and HOA, extra payments, rate changes and what you can afford.Sales tax calculatorAdd or remove sales tax, VAT or GST at any rate: stacked rates, several items, exempt items, discounts, shipping, tip and rounding.Car loan calculatorMonthly car payment with trade-in, tax, fees, rebates, balloon, extra payments and lease vs buy.Credit card payoff calculatorHow long your card debt takes to clear: fixed, minimum or target-date payments, avalanche vs snowball and balance transfers.

    About these USA calculators

    Each calculator on this page is built for USA's own rules, with the source explained on its page. Rules and rates change, so use the results to plan and confirm anything important with the official body or your employer.

    The 12 tools here live in the aviation, money sections of the site. This page gathers them in one place so you can bookmark or share a single link.