Risk Management
Position Size Calculator
A position size calculator tells you how many shares, lots, or contracts to trade from your account size, risk per trade (usually 1–2%), and stop distance. Active stock, forex, and crypto traders use it before entry to cap dollar risk and size the position from the stop, not from a fixed share count.
Enter account size, risk %, and stop loss to get exact position size for stocks, forex, and crypto.
Frequently asked questions
How do I calculate position size for a trade?
Divide maximum dollar risk (account balance × risk %) by per-unit risk (entry price minus stop loss per share or contract). The result is how many shares, units, or lots to trade.
What risk percentage should I use per trade?
Most professional traders risk 1–2% of account equity per trade. Risking more than 2% per trade increases drawdown depth and makes recovery harder.
Plan with math. Validate with your journal.
Use this calculator to plan your trade, then log the result in TraderSetup to see if your execution matches the math — win rate, expectancy, drawdowns, and equity curve included.