Smart Financial Calculators
Four powerful tools to understand your money better. Calculate real interest costs, compare exchange rates, project investment growth, and plan loan payments.
Choose a Calculator
All calculations run in your browser. Sign in to save your work.
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Real Interest
True cost of informal loans with fixed monthly interest
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Currency Exchange
Multi-currency conversion with rate comparison
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Compound Interest
Investment growth with contributions and inflation
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Loan Amortization
Loan payments, schedule, and payoff date
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Tax Rules
Tax simulation engine by country
Why FinCalc?
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Privacy First
All calculations run locally in your browser. Your financial data never leaves your device.
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Save & Compare
Sign in with Google to save calculations and compare scenarios over time.
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Works Everywhere
Responsive design that works on desktop, tablet, and mobile devices.