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Make Smarter
Money Decisions

Professional-grade finance calculators for mortgages, loans, savings, investments and retirement — completely free.

8Free tools
$0Forever free
100%Private
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Mortgage CalculatorMonthly payment + amortization
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Compound InterestWatch your money grow
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FIRE CalculatorFinancial independence age
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Debt PayoffAvalanche vs Snowball
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Free Financial Tools
All Calculators
Click any calculator below. All math happens in your browser — your data never leaves your device.
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Mortgage Calculator

Monthly payment, total interest paid, and full amortization schedule

ℹ️ Results are estimates. Actual payments may vary based on taxes, insurance, and lender fees.
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$
%
yrs
Enter loan details above to calculate your mortgage payment
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Compound Interest Calculator

See how your investment grows over time with the power of compounding

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$
%
yrs
Enter investment details to see growth projection
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Loan Payment Calculator

Calculate monthly payment for any personal loan, auto loan, or student loan

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Enter loan details to calculate your payment
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Savings Goal Calculator

How much do you need to save monthly to reach your financial goal?

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%
yrs
Enter your goal details above

Debt Payoff Calculator

Compare Avalanche vs Snowball methods and find your debt-free date

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%
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Enter your debt details above
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FIRE Calculator

Financial Independence, Retire Early — find your number and target date

ℹ️ Based on the 4% Safe Withdrawal Rate rule (Trinity Study). Results are projections, not guarantees.
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$
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Enter your financial details to find your FIRE number
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50/30/20 Budget Calculator

Enter your monthly take-home income and get an instant budget breakdown following the 50/30/20 rule

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Enter your income to get a personalized budget breakdown
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ROI Calculator

Calculate Return on Investment, annualized ROI, and break-even analysis

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$
yrs
Enter investment details to calculate ROI

About FinCalc Hub

FinCalc Hub is a free collection of financial calculators designed to help you make better money decisions. Whether you're buying a home, paying off debt, planning for retirement, or simply trying to grow your savings — our tools give you instant, accurate estimates with no signup required.

Every calculation happens entirely in your browser. We never collect or store your financial data. Your privacy is guaranteed.

Mortgage Calculator

Our mortgage calculator uses the standard amortization formula to compute your monthly principal and interest payment based on loan amount, interest rate, and term. It also generates a complete amortization schedule showing exactly how much of each payment goes toward principal vs. interest over the life of the loan.

Compound Interest Calculator

Compound interest is often called the "eighth wonder of the world" — money earning returns on its returns creates exponential growth over time. Our calculator applies the standard compound interest formula, accounting for both initial principal and regular monthly contributions, to project your investment value at any future date.

FIRE Calculator

The Financial Independence, Retire Early movement is based on the concept that once your investment portfolio is large enough to sustain your annual expenses using a safe withdrawal rate (typically 4%), you are financially independent. Our FIRE calculator uses this methodology to project both your FIRE number and the age at which you'll reach it given your current savings rate.

Debt Payoff Calculator

The Avalanche method (paying highest-interest debt first) minimizes total interest paid. The Snowball method (paying smallest balance first) provides psychological wins. Our debt payoff calculator shows you exactly how long it will take to become debt-free and how much total interest you'll pay under your current payment plan.

50/30/20 Budget Rule

The 50/30/20 rule, popularized by Senator Elizabeth Warren in her book "All Your Worth," suggests allocating 50% of after-tax income to needs, 30% to wants, and 20% to savings and debt repayment. Our budget calculator instantly applies this framework to your income and shows dollar amounts for each category.

Frequently Asked Questions

Are these calculations accurate?
Our calculators use standard financial formulas and are accurate for estimation purposes. Mortgage payments use the standard amortization formula; compound interest uses the continuous/periodic compounding formula; FIRE uses the 4% rule. For binding financial decisions, consult a certified financial advisor.
Is my financial data stored anywhere?
No. Every calculation runs in JavaScript in your browser. No numbers you enter are ever sent to any server. We have no access to any data you input into these tools.
What is a good mortgage interest rate?
Mortgage rates vary with the economic environment, your credit score, and loan type. Historically, rates below 4% are excellent, 4–6% are moderate, and rates above 7% are higher. Always shop multiple lenders to find the best rate available for your situation.
What is the 4% rule in the FIRE calculator?
The 4% rule states that you can safely withdraw 4% of your portfolio per year in retirement without running out of money over a 30-year period. This is based on the Trinity Study (1998) and remains the most widely cited guideline in retirement planning, though some experts suggest 3.5% for longer retirements.
What's the difference between APR and interest rate on a mortgage?
The interest rate is the basic cost of borrowing principal. APR (Annual Percentage Rate) includes the interest rate plus other costs like origination fees, mortgage insurance, and certain closing costs — making it a more complete measure of loan cost. Our mortgage calculator uses interest rate; your actual APR may be slightly higher.