A growing set of free, browser-based calculators. Every one shows the math behind the indicator, where it is traditionally used, and the exact Pine Script that produces the same value on a TradingView chart. Nothing to install, and your data never leaves your browser.
Turn winning and losing trade counts into a win rate and ratio.
Open toolCompute reward-to-risk from entry, stop, and target prices.
Open toolMeasure return per unit of risk, with optional annualization.
Open toolReturn per unit of downside risk, a downside-only Sharpe.
Open toolCompute expected value per trade from win rate and average P&L.
Open toolDivide gross profit by gross loss to gauge a track record.
Open toolSize a position from account size, risk %, entry, and stop.
Open toolCompute the Kelly optimal fraction and the safer half-Kelly.
Open toolCompound Annual Growth Rate from start, end, and years.
Open toolThe gain needed to recover from a given percentage loss.
Open toolCompute the Relative Strength Index from a price series.
Open toolCompute the MACD line, signal line, and histogram.
Open toolCalculate %K and %D from high, low, and close data.
Open toolCompute the Commodity Channel Index from OHLC data.
Open toolCalculate Williams %R from high, low, and close data.
Open toolThe PineScripter blog covers Pine Script development, debugging, and how to turn these indicators and strategies into code that compiles on TradingView.