The Position Size Calculator tells you exactly how many contracts or shares to trade based on your account size, risk percentage and stop loss distance. Never risk more than you intend on any single trade.
Frequently Asked Questions
What is position sizing?
Position sizing determines how large a trade to take relative to your account. Proper position sizing protects your capital — it's one of the most important concepts in trading.
What percentage should I risk per trade?
Professional traders typically risk 0.5–2% of their account per trade. Beginners should start at 0.5–1%. Never risk more than you're comfortable losing.
What is a stop loss?
A predetermined price level where you exit a losing trade to limit your loss. Your stop loss distance, combined with your risk amount, determines your position size.