Crypto, stocks, dividends, and personal finance calculators
Calculate your Financial Independence, Retire Early (FIRE) number — years to retire, FIRE age, monthly income, and milestone tracker with Lean, Fat, and Barista FIRE modes
Calculate cryptocurrency profit and loss — enter buy price, sell price, and fees to see your P&L and ROI
Calculate dividend yield, annual income, and yield on cost for any stock
Calculate total stock return including dividends, capital gains, and annualized performance over any time period
Validate International Bank Account Numbers with mod-97 checksum and generate test IBANs for 39 countries — full structure breakdown and BBAN format checking
Validate SWIFT/BIC codes — full ISO 9362 structure breakdown with bank, country, location, and branch identification, plus test/passive/live status detection
Pay off debt faster with the snowball or avalanche method — see your payoff order, timeline, and total interest saved
Track monthly income and expenses, calculate savings rate, and visualize your budget breakdown
Add or remove sales tax from any amount — instantly switch between pre-tax and total at any rate
Calculate simple interest, total amount, and earnings for any principal, rate, and time period
Calculate bond price from yield to maturity, or YTM from current price — supports any face value, coupon rate, and payment frequency
Calculate fixed periodic payouts from a lump sum given an interest rate and payout period — monthly, quarterly, or annual
Track your dollar-cost averaging purchases across any cryptocurrency — see average buy price, total coins held, current value, P&L, and ROI with fee support
Calculate impermanent loss for Uniswap V2-style liquidity pools — compare LP value vs HODL given a price change
Estimate how expense ratios, advisory fees, fixed fees, and upfront costs reduce long-term investment returns