Free tools

Trading and Investing Calculators

Size a trade, check a setup, price an option move or project your returns. Every calculator is free, runs right in your browser and explains the math underneath it.

Built on StreetAlpha data

Live dataEarnings Expected MovePick a stock reporting soon and see the move the options market is pricing in, next to how it really moved before.Live dataBitcoin Power Law PriceFair value, support and resistance for any date, and when the model reaches a price.

Trade planning

Position SizeShares to buy from your account size, risk % and stop loss.ChartRisk to RewardEntry, stop and target turned into a ratio and the win rate you need.Average DownYour new average cost after adding to a position, and shares to reach a target.Trade Profit and LossProfit, loss and return on a long or short stock trade, after costs.

Options

ChartExpected MoveThe one and two standard deviation range from implied volatility.ChartOptions Profit and LossPayoff at expiration for calls, puts, spreads and stock, up to four legs.Black Scholes and GreeksFair value of a call and a put, with delta, gamma, theta, vega and rho.ChartCovered CallPremium yield, return if called away, breakeven and downside cushion.

Growth and returns

ChartCompound InterestGrowth with monthly contributions, year by year.CAGRThe steady yearly growth rate between a starting and ending value.Dollar Cost AveragingYour average cost from equal buys at different prices.ChartDividend ReinvestmentIncome and growth with dividends reinvested against taking them as cash.

Risk management

ChartDrawdown RecoveryThe gain needed to get back to even after a loss, and how long it may take.ChartKelly CriterionThe bet size that grows an account fastest over many trades.ChartRisk of RuinThe chance a strategy hits a set drawdown, from 10,000 simulated runs.

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For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Results are estimates from the numbers you enter.