Free Financial Calculators — Plan Your Financial Future
FinCalc gives you instant access to 15+ free financial calculators covering investing, loans, cryptocurrency, personal finance and business planning. Whether you want to calculate compound interest, plan your mortgage payments, calculate stock profit and capital gains tax, figure out crypto profits, or calculate your FIRE retirement number — everything is here, free, no account required.
All calculations happen instantly in your browser. We never store your financial data. Our calculators are trusted by thousands of users monthly for mortgage planning, investment analysis, salary comparisons, crypto trade evaluation and retirement projections.
📈 Investing Calculators
🏠 Loan Calculators
₿ Crypto Tools
💼 Business & Stock Tools
Frequently Asked Questions
How do I calculate compound interest online for free?
Use FinCalc's Compound Interest Calculator. Enter your principal amount, annual interest rate, compounding frequency (daily, monthly, quarterly or annually) and time period. The calculator instantly shows your final amount, total interest earned and a year-by-year growth chart. No signup needed.
What is the best free mortgage calculator?
FinCalc's Mortgage Calculator lets you enter the loan amount, interest rate and term to calculate monthly payments, total interest paid and see the full amortization schedule. It also shows how extra monthly payments reduce your total interest significantly.
How do I calculate stock profit and capital gains tax?
Use FinCalc's Stock Profit Calculator. Enter your buy price, sell price, number of shares, broker fees on both sides and your capital gains tax rate. The calculator shows gross profit, ROI percentage, total tax owed and net profit after all costs.
How do I calculate crypto profit or loss?
Use the Crypto Profit Calculator. Enter your buy price, sell price and quantity to instantly calculate profit or loss, ROI percentage and estimated tax. Works for Bitcoin, Ethereum, and any other cryptocurrency or token.
How do I find my FIRE retirement number?
Your FIRE (Financial Independence, Retire Early) number is typically 25× your annual expenses — the portfolio size that can fund your retirement indefinitely at a 4% withdrawal rate. Use our Retirement/FIRE Calculator to enter your current age, savings, monthly contributions, expected return and annual spending to get your personal FIRE number and projected date.
What is a SIP calculator and how does it work?
A SIP (Systematic Investment Plan) calculator shows how much wealth you can build by investing a fixed amount every month. Use FinCalc's SIP Calculator — enter your monthly investment amount, expected annual return (e.g. 12% for index funds) and time period to see total invested, wealth gained and final portfolio value.
How do I calculate ROI on an investment?
FinCalc's ROI Calculator computes your return on investment for any asset. Enter initial investment, final value, holding period and any income (dividends, rent). Get total ROI %, annualized ROI and daily return rate.
Are all FinCalc calculators really free?
Yes. All 15+ calculators on FinCalc are completely free with no hidden charges, no account creation and no usage limits. The site is supported by non-intrusive advertising to remain free for everyone. Your calculation data never leaves your browser.
⚠️ DISCLAIMER: All calculators on FinCalc are for informational and educational purposes only. Results are estimates based on the inputs you provide and may not reflect actual financial outcomes. FinCalc does not provide financial, investment, tax or legal advice. Always consult a qualified financial advisor before making investment decisions. Last updated: April 2026.