Run the numbers, instantly
Trading math computed in your browser, plus chart-reading quizzes to sharpen your eye. No spreadsheets, no sign-up.
Trade planning
Position size calculator
How many shares to buy so a stop-out costs exactly the amount you're willing to lose.
Risk-to-reward calculator
Risk per share, reward per share, R:R ratio, and optimal position size from entry, stop, and target.
Trading expectancy calculator
Expectancy, profit factor, breakeven win rate, Kelly sizing, and simulated equity curves from your stats.
Trading compound calculator
What a steady daily, weekly, or monthly return does to an account over time. The "1% a day" math.
Prop firm drawdown calculator
Track a static or trailing drawdown day by day and see exactly how much room is left before a breach.
Investing & returns
Stock average calculator
Average cost across multiple buys, plus how many shares it takes to average down to a target price.
Stock return calculators
See what an investment in dozens of major stocks would be worth today, using real historical prices.
ETF return calculators
Historical returns for SPY, VOO, QQQ, SCHD, and other popular ETFs between any two dates.
Stock comparison calculators
Put the same dollars into two stocks, or a stock and the S&P 500, and see which came out ahead.
Stock dividend calculator
Estimate dividend income and reinvestment growth from price, yield, share count, and holding period.
Stock split calculator
New share count and adjusted price after any stock split, reverse splits included.
Options & futures
Technical levels
Tax
Learn
Candlestick pattern guide
What every major bullish and bearish candlestick pattern looks like and how traders use it.
Candlestick pattern quiz
Test your chart-reading skills against 33 bullish and bearish candlestick formations.
Technical indicator quiz
RSI, MACD, moving averages, Bollinger Bands, and volume, one scenario at a time.
What kind of trader are you?
Eight questions to match your schedule and temperament to a trading style.