Financial calculators, simplified.
Free, fast, and accurate tools to help you make smarter financial decisions. Real-time results, interactive charts, no sign-up required.
Including new calculators for 2026's tax law changes, like take-home pay and student loan repayment.
Track your real budget, not just a projection
Log actual income, expenses, and savings over time. No account, no email, no server — your data stays only in this browser.
Featured Calculators
Our most-used tools, or start with any of our 24 free calculators.
Compound Interest Calculator
See how your money grows over time with compound interest and monthly contributions.
Open calculatorMortgage Calculator
Estimate monthly payments, total interest, and a full amortization schedule.
Open calculatorSalary Calculator
Convert your salary between annual, monthly, biweekly, weekly, and hourly rates.
Open calculatorFrom the Blog
Practical guides on debt, budgeting, and building wealth — backed by real math.
The ACA Subsidy Cliff Is Back: How to Rebuild Your Budget for Higher Premiums
Enhanced ACA subsidies expired at the end of 2025 and the income cliff is back for 2026 — what changed, the 2026 thresholds by household size, and 4 concrete ways to rebuild your budget around a higher premium.
Social Security COLA 2027: What the Raise Means for Your Check
The SSA announces the 2027 COLA on October 14, 2026, with projections already around 3.5%-3.6%. Estimate your own updated check with our tool ahead of the official number.
Do You Actually Live Paycheck to Paycheck? The 2026 Numbers vs. Your Real Budget
2026 surveys put the paycheck-to-paycheck rate between 48% and 62% depending on definition. Skip the guesswork — find your real monthly margin and the tier it puts you in.
Why Use FinCalc?
Making smart financial decisions starts with understanding the numbers. FinCalc gives you free, accurate financial calculators that update results in real time — no sign-up, no waiting, no "Calculate" button. Just enter your numbers and see instant, interactive charts and detailed breakdowns.
Whether you're planning for retirement, comparing mortgage options, figuring out how much car you can afford, or deciding whether to rent or buy a home, our calculators help you model different scenarios and make data-driven choices. Every tool includes year-by-year projections, clear explanations of the math behind the results, and frequently asked questions to deepen your understanding.
All calculations run entirely in your browser — we never store your financial data. Our tools cover savings and investing, loans and mortgages, currency conversion, inflation, and interest rate comparisons. Each calculator is built with industry-standard formulas and reviewed for accuracy.
Frequently Asked Questions
- Are these financial calculators really free?
- Yes, every calculator on FinCalc is 100% free to use with no limits. There are no premium tiers, no paywalls, and no account required. We believe everyone deserves access to quality financial planning tools.
- How accurate are the results?
- Our calculators use industry-standard financial formulas — the same math used by banks and financial advisors. Results are meant for educational and planning purposes. For major financial decisions, we recommend consulting a qualified financial professional.
- Is my financial data safe?
- Absolutely. All calculations happen locally in your browser. We never send your numbers to a server or store any personal financial information. Your data stays on your device.
- Which calculator should I start with?
- If you're saving or investing, start with the Compound Interest Calculator to see how your money grows over time. If you're buying a home, the Mortgage Calculator breaks down payments, interest, and amortization. For retirement planning, try the Retirement & FIRE Calculator.