Free Finance
Calculators
100 free calculators for mortgages, loans, investments, retirement, taxes, budgeting, and business. Accurate, transparent, and easy to use.
Browse by Category
Find the right calculator for every financial need
Loans & Mortgages
Calculate mortgage payments, affordability, refinancing, and compare loan options. Tools for homeowners and buyers.
20 calculatorsSavings & Investing
Plan your financial future with compound interest, investment return, and savings goal calculators.
20 calculatorsRetirement Planning
Retirement savings, Social Security benefits, 401k, and IRA calculators to help you plan for retirement.
15 calculatorsTax Calculators
Estimate your tax refund, effective tax rate, capital gains, and more with free tax calculators.
15 calculatorsBudgeting & Everyday Money
Take control of your finances with budgeting, credit card payoff, and salary conversion tools.
15 calculatorsBusiness & Freelance
Profit margin, break-even, freelance rate, and business loan calculators for entrepreneurs.
15 calculatorsPopular Calculators
Our most used tools to help you make smarter financial decisions
Credit Card Payoff Calculator
See how long it takes to pay off credit card debt and how much interest you will pay. Adjust your mo
Salary to Hourly Wage Calculator
Convert your annual salary to an hourly rate, or vice versa. See your daily, weekly, and monthly ear
Rent vs Buy Calculator
Compare the financial outcome of renting vs buying a home over a chosen time horizon. See which opti
50/30/20 Budget Calculator
Split your income into needs, wants, and savings using the popular 50/30/20 budgeting rule. See exac
Credit Card Interest Calculator
Calculate how much interest accrues on your credit card balance. See daily and monthly interest char
Freelance Hourly Rate Calculator
Calculate your required freelance hourly rate based on your target income, billable hours, and busin
Break-Even Point Calculator
Calculate how many units you need to sell to break even. Enter fixed costs, variable costs, and pric
Profit Margin Calculator
Calculate your gross and net profit margins. Enter revenue, cost of goods sold, and operating expens
Startup Runway Calculator
Calculate how many months your startup can operate before running out of cash. Enter your cash on ha
Markup Calculator
Calculate the selling price from cost and markup percentage. See the profit margin and markup amount
Small Business Loan Calculator
Calculate monthly payments on a small business loan. Enter your loan amount, interest rate, and term
Mortgage Payoff Calculator (Extra Payments)
See how extra payments reduce your mortgage term and save interest. Enter your loan details and extr
Why FinCalc?
Built differently from other calculator sites
Transparent Math
Every calculator shows its formula and explains step-by-step how results are calculated.
Fast & Accurate
Real-time calculations as you type. No page reloads, no waiting, no errors.
Completely Free
All 100 calculators are free to use. No sign-ups, no hidden fees, no limitations.