Finance Toolkit

Free Finance Calculators
for Smart Investors

Compound interest projections, milestone timelines, and real historical returns — all free, all in your browser.

10free tool live
Nosignup required
100%runs in browser
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2,400+ calculations run this month
All Finance Tools10 tools live
$1,247,832Millionaire by 47Age 25Age 5501
New

Compound Interest Time Machine

New

See when you'll hit $100K, $500K, $1M — with growth chart, milestone timeline, cost-of-waiting analysis, and historical S&P 500 returns.

Growth ChartMilestonesTime MachineReport Card
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58%SAVINGSLean FI92%Regular FI73%Fat FI48%Coast FI100%🏆Freedom: Mar 203194% MC survival⛵ Coast FI ✓Portfolio earned $12.43 this minute02
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FIRE Calculator

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Get your exact Freedom Day, FI number, and Monte Carlo survival rate. 4 FIRE types, 1,000 market simulations, Coast FI detector.

Monte CarloCoast FIFreedom DayReport Card
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DEBT FREEDOM COUNTDOWNSep 2028debt freedom date · 29 monthsTODAY'S COST$38.42TOTAL BALANCESNOWBALL vs AVALANCHEAvalanche saves $14KAvalancheSnowballC+03
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Debt Freedom Countdown

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Your exact debt freedom date, snowball vs avalanche race, and live daily interest cost counter. 6-dimension debt health grade.

Freedom DateSnowball vs AvalancheReport CardDaily Cost
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67thAFFLUENTAge 35 · Top 33%$187,500LIVE04
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Net Worth Percentile Ranker

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See exactly where your net worth ranks for your age using Federal Reserve SCF 2022 data. Wealth tier identity, 6-dimension Report Card, and 30-year growth projections.

SCF 2022 DataAge-AdjustedReport CardWealth Tiers
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🏠 BUY$387KNet Wealth🔑 RENT$474KNet Wealth🏆 CHAMPIONVS⚔️ ROUND 10RENTING WINS BY$87,234over 10 yearsBuyRentBE yr 8.2LIVE05
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Rent vs Buy Calculator

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The honest mortgage vs rent showdown: full amortization, PMI auto-removal, opportunity cost engine, hidden costs reveal, 5×5 sensitivity heatmap, and break-even timeline.

AmortizationSensitivity HeatmapReport CardOpportunity Cost
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$347K gapGrade B+$135K/hrCareer Divergence Calculator06
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Salary Lifetime Impact Calculator

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See the compounding cost of every raise you didn't negotiate. Career fork visualization, negotiation ROI, job-hop calculator, 6-dimension career report card.

Career ForkNegotiation ROIJob-Hop CalculatorReport Card
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Grade B+−$47K feesPortfolio Health Radar07
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Investment Portfolio Grader

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Grade your portfolio across 6 dimensions. 8-axis radar chart, fee drag devastation calculator, efficient frontier analysis, rebalancing action plan, and historical backtest.

Radar ChartFee DragEfficient FrontierReport Card
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TP $185Entry $150SL $138R:R 2.942 sharesTrade Setup Diagram08
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Position Size Calculator

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Calculate exact shares from risk %, entry, stop loss & take profit. 3 sizing methods, Kelly Criterion, Monte Carlo equity curve, losing streak stress test.

Kelly CriterionMonte CarloR:R RatioReport Card
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Bull Call Spread+$450 maxΔ 0.42 Θ −2.1Options Payoff Diagram09
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Options Profit Calculator

New

Interactive payoff diagrams, 16 pre-built strategies, live Greeks dashboard, P&L heatmap, probability of profit, and time decay timelapse animation.

Payoff DiagramGreeksP&L Heatmap16 Strategies
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DCA done68%LS winsLUMP SUM WINS+$12.4K edge1,000 Monte Carlo simulations10
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DCA vs Lump Sum Simulator

New

Should you invest all at once or spread it out? 1,000 Monte Carlo simulations, S&P 500 backtesting from 1970, regret analysis, cash drag calculator, and 6-dimension strategy report card.

Monte CarloHistorical BacktestRegret AnalysisReport Card
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Runs 100% in your browser
No data leaves your device. No servers, no accounts, no tracking.
Shareable results
Send a URL, export a PNG, or download CSV — results worth sharing.
Built for investors
Used to plan retirement, track milestones, and visualize compound growth.

More finance tools coming

20 finance tools planned

FIRE calculator, debt freedom countdown, net worth ranker, and much more — all free.

Try Compound Interest Calculator →
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