Risk pertrade
Figure out how large your position can be to stay inside your risk limit. Enter your account value, risk-%, entry price and stop-loss — get your max position size in units and value instantly.
What is "risk per trade"?
Paul Tudor Jones' 1% rule and Van Tharp's 2% rule say the same thing: cap the loss per trade at a small percentage of your total capital. Sounds conservative, but the difference between surviving and blowing up sits in exactly this habit.
An account that loses 10 trades in a row at 2% per trade is still at 81.7%. The same account risking 10% per trade is at 34.9% — and needs +186% to break even. The math punishes aggression mercilessly.
What this tool computes
- Max. loss — account value × risk% = your max dollar-at-risk
- Stop distance — absolute price difference between entry and stop
- Position size — max-loss divided by stop distance = units you can buy/short
- Position value — units × entry price = total market exposure
The tool assumes a fixed stop-loss level; without a stop, risk-per-trade is a theoretical concept. If you refuse to set a stop, your position size must be substantially smaller to stay sleepable.