Calculators
46 calculators, one idea.
Show the real numbers, then help you start. 46 are live now; the rest are on the way.
Grow
Pick an amount and an asset. See what it became with real prices, including the bad years you would have bought through.
Compound interest calculator The classic, with a growth chart DCA calculator Monthly buys, real prices since 1900 Stock profit calculator Buy, sell, fees, profit Average cost calculator Your average price per share Dividend income calculator Monthly income from dividends When will I be a millionaire? The age you cross $1M CAGR calculator The yearly growth rate Rule of 72 calculator Years to double your money DRIP calculator Reinvest dividends or not Live off dividends calculator Bills covered by dividends Real return calculator After inflation and taxes Net worth growth calculator Your net worth, projected
Compare
Lump sum or spread it out? Weekly or monthly? Wait for the dip? Test each one on decades of real data.
Retire early
From lean to fat, see how much you need and how many years your monthly buys take to get there.
Retirement calculator Will you have enough? FIRE number calculator Spending × 25 Roth IRA calculator Tax-free growth by retirement 401(k) calculator with match See your employer match Coast FIRE calculator When you can stop adding FatFIRE calculator The big-lifestyle number Safe withdrawal rate calculator Does the 4% rule hold up? Retirement age calculator The earliest age you can retire How much do I need to retire? Your nest egg, from average US spending How long will my money last? Years until savings run out HSA investment calculator The triple tax advantage Asset allocation by age A starting stock and bond mix Rebalancing calculator Back to your target mix
Crypto & gold
Recurring Bitcoin and gold buys since any date, with every crash shown honestly, plus what fees do to small buys.
Everyday money
Turn coffee, raises and spare change into a plan, and see what starting today is worth.
Inflation calculator What a dollar used to buy Savings goal calculator How long to reach $X Skip it, invest it Daily habits, invested Rent vs buy calculator Own a home or rent and invest? Paycheck investing calculator A % of every check Kids' investment calculator From birth to 18 or 30 Cost of waiting calculator Now vs in five years Round-up calculator Spare change, invested Invest your raise calculator Half of every raise Emergency fund calculator Your cash cushion first Side hustle investing Invest your extra income
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