Understanding Forex Lot Sizes

Overview

Lot sizes determine the notional value of a forex trade and directly affect how much each pip movement is worth in your account currency. Standard lots (100,000 units) are used by professional and well-capitalised traders, while mini (10,000), micro (1,000), and nano (100) lots allow smaller accounts to participate with precise risk control. Choosing the correct lot size based on your stop-loss distance and risk percentage is fundamental to sound risk management — our position size calculator automates this process. Whether you trade EUR/USD or exotic pairs, matching your lot size to your account equity prevents over-exposure and keeps drawdowns manageable.

Key Takeaways

• Standard lot = 100,000 units; mini = 10,000; micro = 1,000; nano = 100.
• Pip value is directly proportional to lot size — bigger lot = bigger moves per pip.
• Micro and nano lots allow precise risk management on smaller accounts.
• Position sizing should be based on your risk per trade, not lot size alone — see our glossary for related definitions.

Practical Tips

• Use a position-size calculator to determine lots based on your stop-loss distance and risk percentage.
• Start with micro lots and scale up as your account and confidence grow.
• Some brokers like FXPro allow fractional lots for even finer control.