Finance CalculatorsFree Tools for Every Money Decision
From your first mortgage to retirement planning — run the numbers on every financial decision with free, instant calculators. No signup, no ads, no spreadsheets.
Home & Mortgage
All Mortgage CalculatorsFree · Instant · No signup
Mortgage Calculator
Monthly payment, full amortization schedule & 15 vs 30-year comparison.
Open calculatorHome Affordability
Max home price based on income, debts & the 28/36 rule.
Open calculatorMortgage Refinance
Monthly savings, break-even point & lifetime interest saved from refinancing.
Open calculatorRent vs Buy
True financial comparison accounting for appreciation, opportunity cost & taxes.
Open calculatorHELOC Calculator
Home equity line limit, draw-period payment & full repayment schedule.
Open calculatorRental Property ROI
Cap rate, cash-on-cash return, monthly cash flow & deal rating.
Open calculatorBRRRR Calculator
Equity created, cash returned, cash left in deal & infinite return analysis.
Open calculatorInvesting & Wealth Building
All Investing CalculatorsFree · Instant · No signup
Investment Calculator
Compound growth projections, FIRE analysis & portfolio milestones.
Open calculatorCompound Interest
Rule of 72, growth charts & side-by-side rate comparisons.
Open calculatorROI Calculator
Return on investment, annualized CAGR & net profit for any asset.
Open calculatorDRIP Calculator
Dividend reinvestment vs cash — long-term portfolio growth comparison.
Open calculatorDCA Calculator
Dollar-cost averaging growth vs lump sum over any time horizon.
Open calculatorCoast FIRE Calculator
Invest enough today so compound interest reaches retirement for you — no more contributions needed.
Open calculator401(k) Calculator
Retirement balance projection with employer match & compound growth.
Open calculatorRoth vs Traditional IRA
Which account saves more after taxes based on your current vs future bracket.
Open calculatorCollege Savings (529)
Monthly savings needed and on-track status for any tuition target.
Open calculatorRetirement & Protection
All Retirement CalculatorsFree · Instant · No signup
Retirement Calculator
FIRE age, savings rate analysis & on-track progress.
Open calculator401k Early Withdrawal
Real cost of cashing out: 10% penalty + taxes + opportunity cost.
Open calculatorSocial Security
Optimal claiming age — compare 62 vs 67 vs 70 break-even analysis.
Open calculatorLife Insurance
How much coverage your family needs using the DIME method.
Open calculatorFinancial Health Score
Score your finances 0–100 across 6 categories with personalized recommendations.
Open calculatorTax & Income
All Tax CalculatorsFree · Instant · No signup
Income Tax Calculator
2025 federal & state taxes with FICA — all 50 states.
Open calculatorTake-Home Pay
Annual net pay after federal tax, state tax & FICA for any salary.
Open calculatorPaycheck Calculator
Exact per-paycheck net pay with 2025 IRS brackets, all pay periods.
Open calculatorSalary Calculator
Convert annual, hourly, monthly & biweekly pay across 29 currencies.
Open calculatorFreelancer Tax
Self-employment tax, quarterly estimated payments & key deductions.
Open calculatorW-4 Withholding
Right federal withholding per paycheck — effective rate & W-4 guidance.
Open calculatorCapital Gains Tax
Short-term vs long-term rates, tax owed & net proceeds for any asset sale.
Open calculatorGeographic Salary
Compare purchasing power of any salary across 35 US cities.
Open calculatorSales Tax Calculator
Instant sales tax calculation for all 50 US states.
Open calculatorInflation Calculator
Purchasing power & real dollar value using CPI data from 1913–2025.
Open calculatorDebt & Credit
All Debt CalculatorsFree · Instant · No signup
Loan Calculator
Monthly payment, total interest & amortization for any loan type.
Open calculatorCredit Card Payoff
Debt-free date and interest saved by paying more than the minimum.
Open calculatorDebt Payoff Calculator
Avalanche vs snowball — your fastest path to zero debt.
Open calculatorAuto Loan Calculator
Monthly car payment, total interest & rate comparison table.
Open calculatorStudent Loan Payoff
Four repayment plans compared side by side — standard, accelerated, extended & IDR.
Open calculatorBudget, Savings & Net Worth
Free · Instant · No signup
50/30/20 Budget
Build a balanced budget — see exactly where your money should go.
Open calculatorEmergency Fund
How much you really need based on job security, dependents & expenses.
Open calculatorNet Worth Calculator
Assets, liabilities & wealth tier snapshot with tracking over time.
Open calculatorSavings Goal
Time to reach your goal — or monthly contribution needed.
Open calculatorSubscription Audit
Track every subscription, find forgotten services & see true monthly spend.
Open calculatorCurrency Converter
Live exchange rates for 30+ currencies.
Open calculatorBusiness & Career
Free · Instant · No signup
Break-Even Calculator
Break-even units, revenue, contribution margin & profit for any product.
Open calculatorProfit Margin
Gross, operating & net margin with markup percentage for any business.
Open calculatorJob Offer Comparison
Compare two offers: salary, bonus, 401k match, equity, benefits & total comp.
Open calculatorEV vs Gas Calculator
True total cost of ownership — electric vs gas car over 5–10 years.
Open calculatorPersonal Finance Guides
Every guide includes an interactive calculator so you can run the numbers for your situation
How a Mortgage Works: A Simple Explanation of Every Component
Most people sign a 30-year mortgage without fully understanding how their payments are split between interest and principal — or why they barely build equity in the first decade. Here's what's actually happening.
7 min readCompound Interest Explained: Why Starting Early Changes Everything
Compound interest is the closest thing to magic in personal finance. Here is how it works, why time is more powerful than contribution amount, and how to make it work for you.
6 min readThe 50/30/20 Budget Rule: A Practical Guide
Budget frameworks fail when they're too complicated to follow. The 50/30/20 rule is popular because it's simple — but applying it to real life requires understanding when to bend the rules.
6 min readDebt Avalanche vs. Debt Snowball: Which Method Is Right for You?
Both the debt avalanche and debt snowball methods work — but one saves thousands more in interest. Here is exactly how each strategy works, with a real side-by-side comparison and a calculator to model your own debts.
7 min readWhat Is Your FIRE Number? (And How to Calculate It)
Financial Independence, Retire Early starts with one number. Here is how to calculate your FIRE number, choose the right version of FIRE, and project when you will get there.
8 min readShould You Pay Off Debt or Invest? The Real Math
The answer depends entirely on interest rates. High-rate debt should always be paid off first. Below a certain rate, investing wins. Here is exactly where the line is.
5 min readWhat Can Finance Calculators Help You Do?
Finance calculators bridge the gap between general advice and your specific numbers. Reading that you should save 15% for retirement is useful; putting in your actual salary, current balance, and target retirement age to see whether you're on track is actionable. These tools turn financial principles into concrete decisions you can act on today.
The most impactful calculators to run first: the Net Worth Calculator gives you your baseline — your true financial starting point. The Retirement Calculator tells you whether your current savings rate will get you to your FIRE number on time. The 50/30/20 Budget Calculator shows exactly where to reallocate spending to accelerate those goals.
For debt, the Debt Payoff Calculator compares the avalanche and snowball methods side by side — showing your exact debt-free date and the total interest saved under each approach. The difference can often be thousands of dollars and years of payments.
How to Use These Calculators Together
The calculators are designed to be used in sequence as your financial situation evolves. Start with budgeting and emergency savings, then move to eliminating high-interest debt before optimizing investments and working toward financial independence. If homeownership is a goal, the Home Affordability Calculator should come before you browse listings — not after.
All calculators use 2025 IRS tax brackets and current rates where applicable. Results are estimates for planning purposes — for specific tax advice, consult a CPA or CFP.