Free trading calculators
Free, private, in-browser calculators for day traders. No sign-up.
- Position size calculator: Free position size calculator: enter account size, risk %, entry and stop to get the share count, dollar risk and position value. Works for longs and shorts.
- Risk/reward & R-multiple calculator: Free risk/reward and R-multiple calculator: enter entry, stop, target and exit to get R:R ratio, R-multiple of the result, and breakeven win rate.
- Profit factor & expectancy calculator: Free profit factor and expectancy calculator: enter win rate, average win and average loss (or gross profit/loss) to get profit factor, expectancy per trade and payoff ratio.
- Breakeven win rate calculator: Free breakeven win rate calculator: see the minimum win rate you need to break even for your average win, average loss and per-trade fees.
- Drawdown recovery calculator: Free drawdown recovery calculator: see the percentage gain needed to recover from a drawdown, and how many losing trades in a row cause it at your risk per trade.
- PDT day trade calculator: Free PDT calculator: enter your day trades in the last 5 business days and account equity to see how many day trades you have left, with FINRA's 2026 PDT rule change.
Get one trading-stats lesson a week: subscribe to The TapeLog (free).
FAQ
Are these calculators free?
Yes. They run in your browser and send no data anywhere.
Which calculator should I start with?
Start with the position size calculator to set risk, then use the profit factor & expectancy calculator on your journal stats.