Financial Calculator Suite

    Financial Calculator Suite

    Tip, loan, mortgage PITI, ROI/CAGR, and compound interest — all in one tool

    Tip
    $9.00
    Total
    $59.00
    Per person
    $59.00

    About the Calculator Suite — Tip, Loan, Mortgage, ROI, Compound Interest

    Five of the most-searched financial calculators bundled into one tool — tip / loan / mortgage / ROI / compound interest. Each one does its job precisely (mortgage includes the tax and insurance pieces most online calculators omit; compound interest accepts regular contributions at configurable frequency). All math runs in your browser.

    Features

    How it works

    1. Pick a calculator tab.
    2. Enter your numbers.
    3. See results update live.

    Use cases

    Frequently asked questions

    Is compound interest realistic?

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    The math is exact. Real-world returns aren't guaranteed — 'S&P 500 averages 10%/year' is a historical average with wild year-to-year variance. Use the calculator for planning, not promises.

    Why does my mortgage PITI differ from my lender's quote?

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    We compute principal + interest precisely. Tax and insurance are estimates — your lender has exact figures from the property assessor and insurance provider. We're ±5% of a typical quote.

    Does the loan calculator handle variable-rate loans?

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    No — assumes fixed rate. For ARM or variable, run the calculation at the current rate and again at the cap rate to see the range.

    What's CAGR?

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    Compound Annual Growth Rate — the constant rate of return that would produce the same ending value. It smooths out year-to-year variance so you can compare investments of different durations.

    Can I plan for early mortgage payoff?

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    Add your extra monthly payment as a 'contribution' in the compound interest calculator (though that's aspirational). A full amortization table is on the roadmap.