Position Size Calculator
Know exactly how many shares to buy based on your risk tolerance. No guessing.
Uses & Examples
When to Use This Tool
- Swing trader sizing a new stock position without risking more than 2% of their account
- Day trader calculating exact share count before entering a breakout trade
- New trader learning proper risk management instead of buying random round lots
- Scaling into a position — recalculate size for each add based on new stop level
Worked Example
Worked Example
You have a $25,000 account and want to risk 2% per trade.
Entry price: $50.00 | Stop loss: $47.50 | Risk per share: $2.50
Risk amount: $25,000 × 2% = $500
Shares: $500 ÷ $2.50 = 200 shares
Position value: 200 × $50 = $10,000 (40% of account)