BTCCalc · Free Finance & Crypto Calculators

Make smarter money decisions — instantly.

Free calculators for mortgages, loans, budgets, retirement, and currency conversion. No signup, no ads, runs entirely in your browser.

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Two tool categories

What are you working on?

Every tool is schema-driven, runs fully offline, and gives you results in under a second. No account, no paywall, no tracking.

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Financial Calculators

Mortgage, loan, ROI, budget, retirement, and more. Each includes a worked example, a comparison table, and a detailed FAQ.

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Currency Converters

USD to EUR, GBP, JPY, CNY, BRL, INR, and more. Live-rate context with historical context notes.

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Most-used Tools

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The most popular calculators on BTCCalc, used by thousands of people for quick, accurate financial estimates.

Mortgage Calculator Loan Calculator Amortization Schedule Retirement Planner ROI Calculator Budget Calculator Compound Interest Credit Card Payoff Salary Calculator Tax Calculator Inflation Calculator Net Worth Tracker Paycheck Calculator Emergency Fund Student Loan Payoff USD → EUR USD → JPY USD → CNY GBP → USD USD → INR
Featured Tool

Amortization Calculator

Generate a full loan amortization schedule showing principal, interest, and remaining balance for every payment. Visualize how each payment splits between interest and principal over the life of the loan.

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Why BTCCalc?

All calculators use standard financial formulas (XIRR, PMT, FV) verified against industry references. Every page explains the formula used, its assumptions, and its limits — so you understand the number, not just read it. No AI hallucinations, no rounding tricks, no upsell.