What is a standard lot in forex?
A standard lot equals 100,000 units of the base currency. A mini lot is 10,000 units and a micro lot is 1,000 units.
Tool 8
Lot Size Calculator
Convert your risk parameters into the exact lot size or contract quantity your broker requires.
Lot sizing tells you exactly how many lots or contracts to trade based on your account size, risk percentage, stop distance, and the instrument's value per point. This is different from position sizing in that it gives you the final execution number rather than the dollar risk amount.
Calculator
Example Walkthrough
On a $100,000 account risking 0.5%, you are risking $500. If the stop is 50 pips away and each pip is worth $10, the lot size would be approximately 1 standard lot. Always verify with your broker's contract specifications.
Instrument Warnings
- Forex pip values vary by currency pair and account currency.
- Futures contracts have fixed contract sizes that differ by exchange.
- Indices and stocks have different point values than forex pairs.
- Always confirm your broker's exact contract specifications before trading.
Checklist Before Executing
- I verified the instrument's point value with my broker.
- I confirmed the lot size matches my broker's minimum and maximum.
- I checked margin requirements for the calculated position size.
- I accounted for swap/rollover costs if holding overnight.
FAQ
How do I find my instrument's point value?
Check your broker's contract specifications or use a demo account to calculate the dollar value per pip movement.
Is lot size the same as position size?
Position size refers to the dollar risk amount. Lot size is the actual number of contracts or lots to execute based on that dollar risk.
Can I use this for futures trading?
Yes. Enter the appropriate point value for your futures contract (e.g., $12.50 per point for ES futures).
Related Tools
Next, use the Position Size Calculator and the Reward to Risk Calculator.
Source note: formula logic is stored in assets/js/calculators.js. Last updated July 2026.