38 Free Tools

Investor Tools

Simple calculators, models, and investing resources to help you make better long-term decisions.

Featured tools

The highest-value tools to begin with. Each is free, needs no account, and takes a minute or two.

Most viewed tools & dashboards

Updated 2026-07-20

The tools and dashboards readers open most, ranked by real page views from our analytics.

Beginner favorites

Three friendly tools that build real intuition before you put any money to work.

Market research tools

Models and live market tools for when you want to zoom out and study the bigger picture.

How to use these tools

1Start with your goal

Pick the question you actually have, like can I afford this or how might this grow, and choose the tool that matches.

2Run the numbers

Enter realistic inputs. Honest, conservative assumptions beat optimistic ones every time.

3Compare scenarios

Change one input at a time to see what really moves the outcome, not just the headline number.

4Avoid relying on one model

Any single model can be wrong. Use a few lenses and look for agreement, not certainty.

5Use them as education

These tools are for learning and planning. They are not financial advice or a recommendation to buy or sell.

All 38 tools by category

Calculators23

Some calculators below use one asset for fun comparisons. They show history, not a recommendation to buy any single asset.

Housing Affordability Tracker PopularSee whether homes look affordable or stretched, and estimate a mortgage at current rates.BeginnerAffordability CalculatorsCompare investments to homes, retirement, and big purchases.BeginnerBitcoin House Calculator PopularHow many Bitcoin it takes to buy a house, over time.BeginnerGold House CalculatorHow many ounces of gold it takes to buy a house.BeginnerS&P 500 House CalculatorHow many S&P 500 (SPY) shares it takes to buy a house.BeginnerNvidia House CalculatorHow many Nvidia shares it takes to buy a house.BeginnerBitcoin Retirement CalculatorExplore how much Bitcoin a retirement target might take.IntermediateBitcoin Lamborghini CalculatorHow many Bitcoin it takes to buy a Lamborghini.BeginnerCompound Interest Calculator PopularSee how money grows with compounding over time.BeginnerPortfolio Growth Calculator PopularProject long-term value with rising contributions, inflation adjustment, and a year-by-year table.IntermediateDividend Calculator PopularProject dividend income and DRIP reinvestment growth.BeginnerStock Return CalculatorWork out capital gains and total return on a trade.BeginnerCrypto DCA CalculatorModel recurring crypto buys over time.BeginnerRetirement Calculator PopularProject your nest egg and retirement income.BeginnerFIRE CalculatorFind your FIRE number and the age financial independence could be within reach.BeginnerInvestment Scenario CalculatorProject future value, dividend income, and total return from your own assumptions.IntermediateRental Property Analyzer PopularSee cash flow, cap rate, and cash-on-cash return on a rental at today's mortgage rate.IntermediateEmergency Fund Calculator PopularSee how big your emergency fund should be, your progress, and how long it takes to fully fund it.BeginnerWealth Rank CalculatorSee where your income or net worth ranks.BeginnerIncome Percentile Calculator PopularSee what income percentile you are in, nationally and worldwide.BeginnerNet Worth Percentile CalculatorSee where your net worth ranks, plus the top 10% and top 1% thresholds.BeginnerGlobal Wealth Explorer PopularSee what income is middle class, top 10%, or top 1% around the world.BeginnerCost of Living Calculator PopularCompare the cost of living between places.Beginner
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