Free Financial Tools

Calculators, Converters, Comparisons & Use-Cases

Professional-grade financial tools — tax, mortgage, retirement, investing, side-by-side comparisons, and real-world scenarios. No account, no signup — just open and use.

Tool Categories

Choose Your Tool

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Calculators

Essential financial calculators for professionals. Federal tax, mortgage payments, 401(k) growth, capital gains, ROI, FIRE number, and more.

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Converters

Quick and accurate conversion tools for professionals. APR↔APY, currency, inflation-adjusted returns, markup↔margin, and more — instantly, no account needed.

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Comparisons

Side-by-side decision tools — 401(k) vs. Roth, Buy vs. Rent, Lease vs. Own, Refinance vs. Hold. Make the smarter choice with data, not guesswork.

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Use-Cases

Real-world scenarios walked through step by step — retiring at 50, RSU vesting decisions, freelance tax setup, first-time homebuyer math. Specific answers to specific questions.

Most-Used Tools — Quick Access

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Profit Margin

Gross, net & operating margins

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401(k) Calculator

Growth, employer match & tax savings

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Mortgage Calculator

Monthly payment, interest & amortization

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Converters

%, currency & unit converters

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