Finance Tools
Mortgage, loan, investment, and retirement calculators.
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Managing money is one of the most important skills in modern life, yet most people struggle with the math behind mortgages, loans, investments, and savings. Our free finance calculators take the guesswork out of every major financial decision.
Whether you are buying your first home, comparing car loans, planning for retirement, or figuring out how much to tip at dinner, these tools give you instant, accurate answers. Every calculator uses formulas sourced from authoritative institutions like the IRS, Federal Reserve, and CFA Institute standards.
Compound interest is often called the eighth wonder of the world, but understanding it requires more than a vague intuition. Our compound interest calculator shows exactly how your money grows over time, factoring in monthly contributions, different compounding frequencies, and inflation. The mortgage calculator breaks down principal and interest payments across 15-year and 30-year terms, so you can see the true cost of homeownership.
For debt management, the loan calculator and credit card payoff calculator help you create realistic payoff timelines. The rent-vs-buy calculator compares total costs over any time horizon, accounting for home appreciation, maintenance, and opportunity cost.
All calculations run entirely in your browser. No data is sent to any server, and no personal information is collected. You can experiment with different scenarios, save your results, and make confident decisions about your financial future.
Popular Finance Tools
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All Finance Tools
Tip Calculator
Calculate tips and split bills by amount, percentage, and people.
Savings Calculator
Calculate savings growth with compound interest and contributions.
Retirement Calculator
Calculate how much you need to retire with inflation adjustment.
Loan Amortization Schedule
Generate a full payment table with principal, interest, and balance breakdown.
Inflation Calculator
Calculate how inflation affects purchasing power over time.
Credit Card Payoff Calculator
Calculate how long it will take to pay off credit card debt with interest breakdown.
Rent vs Buy Calculator
Compare renting versus buying a home with total cost breakdown.
Income Tax Calculator
Estimate US federal income tax based on filing status, income, and deductions.
Hourly to Salary Calculator
Convert hourly wage to annual, monthly, weekly, and daily salary.
Sales Tax Calculator
Calculate sales tax for any US state with reverse tax option.
Net Worth Calculator
Calculate net worth by adding assets and subtracting liabilities.
Break-Even Calculator
Calculate break-even point in units and revenue for your business.
Commission Calculator
Calculate flat and tiered sales commissions with earnings breakdown.
Debt-to-Income Ratio Calculator
Calculate your DTI ratio and assess your borrowing capacity with lender threshold guidelines.
Loan Comparison Calculator
Compare two loans side-by-side with monthly payments, total interest, and total cost.
Car Loan Calculator
Calculate monthly car payments with down payment, trade-in, and sales tax.
Emergency Fund Calculator
Calculate your recommended emergency fund based on monthly expenses and coverage months.
Freelance Rate Calculator
Calculate your ideal hourly, daily, and monthly freelance rate from desired annual income.
ROI Calculator
Calculate Return on Investment and Compound Annual Growth Rate with dollar returns.
Profit Margin Calculator
Calculate profit margin, markup percentage, and profit from cost and revenue.
Paycheck Calculator
Calculate net paycheck from hourly rate or salary after taxes and deductions. Free online paycheck estimator.
Markup Calculator
Calculate selling price and profit from cost and markup percentage.
Discount Calculator
Calculate discounted prices, savings, and discount percentages for shopping and sales.
Invoice Generator
Create professional printable invoices with line items, taxes, and totals.
Receipt Maker
Generate simple printable receipts for payments and sales transactions.
Simple Interest Calculator
Calculate simple interest and total amount from principal, rate, and time.
Burn Rate Calculator
Calculate monthly burn rate, runway, and cash zero date for startups.
Unit Price Calculator
Compare unit prices to find the best deal when shopping.
Car Payment Calculator
Calculate monthly car payments with trade-in, down payment, and sales tax.
Tip Split Calculator
Split bills and tips fairly among any number of people.
Home Equity Calculator
Calculate your home equity and loan-to-value ratio from home value and mortgage balance.
Amortization Schedule
Generate a complete amortization schedule with principal, interest, and balance for each payment.
Frequently Asked Questions
Are these finance calculators accurate?▼
Yes. All formulas are sourced from IRS publications, Federal Reserve guidelines, and standard financial mathematics. Results match industry-standard spreadsheet calculations.
Do you store my financial data?▼
No. All calculations run client-side in your browser. No personal or financial data is transmitted to our servers.
Can I use these for business decisions?▼
Absolutely. These tools are free for both personal and commercial use. Many small business owners use them for pricing, loan comparisons, and ROI analysis.
What is the difference between APR and APY?▼
APR (Annual Percentage Rate) is the simple yearly interest rate without compounding. APY (Annual Percentage Yield) includes the effect of compounding and gives the true yearly return.
How do I know if renting or buying is better?▼
Use our rent-vs-buy calculator. It factors in home price appreciation, maintenance costs, insurance, tax deductions, and investment returns on down payment savings.
Which retirement calculator should I use first?▼
Start with the retirement calculator to estimate your target savings. Then use the compound interest calculator to see how much to contribute monthly to reach that goal.
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