Position Size Calculator
Calculate the right number of contracts to trade based on your account size and risk tolerance. Never over-leverage again.
What is Position Size Calculator?
Position Size Calculator is a risk management tool that calculates how many option contracts to trade based on your account size, maximum risk per trade, and the trade's maximum loss.
Proper position sizing prevents account blowups by limiting risk to 1-2% per trade regardless of confidence level.
How the Position Size Calculator Works
Position sizing answers one question: how many contracts can you trade without risking more than a fixed percentage of your account on a single trade? Contracts = (Account Size × Risk % per Trade) / Max Loss per Contract, rounded down to a whole number of contracts.
Example: a $50,000 account risking 2% per trade has a $1,000 risk budget for that trade. If the trade's max loss is $200 per contract — for example, a $5-wide iron condor sold for a $3.00 credit, where max loss = ($5 − $3) × 100 = $200 — the position size is $1,000 / $200 = 5 contracts.
Risking 1-2% of account equity per trade is the standard professional guideline: it keeps a string of losses from doing lasting damage to the account, regardless of how confident you feel about any single trade.
Related Options Strategies
Understanding related strategies helps you choose the best approach for your market outlook and risk tolerance. Each strategy has unique characteristics that make it suitable for different market conditions.