Position Size Calculator
Calculate a position from your balance and stop-loss distance.
Plan a position around your risk
Enter your account balance, risk percentage, entry and stop prices. The estimate uses your instrument specifications to suggest a lot size that fits the stated risk budget.
- Manual inputs you control
- Clear estimated result
- Verify broker specifications
Position Size Calculator
Adjust the example values to match your trade and your broker’s symbol details.
Ready when you are.
Review the inputs, then calculate. Nothing is sent to a broker.
How this Position Size Calculator works
Follow the inputs, calculate the estimate and check the assumptions before making a trading decision.
- 01Set your inputs
Enter the fields for your instrument, account and planned trade.
- 02Review specifications
Check lot, contract, pip and conversion values where those fields appear.
- 03Calculate
See the estimate and its breakdown in the results panel.
- 04Verify before trading
Compare the assumptions with your broker’s current conditions.
Calculation and assumptions
Risk budget = balance × risk %. Raw lots = risk budget ÷ (stop distance × contract size × quote-to-account conversion). The displayed lot is rounded down to your volume step and capped at your maximum. If the minimum lot exceeds the risk budget, the result is zero.
Where a quote-to-account conversion field is available, enter how much one unit of the instrument’s quote currency is worth in your account currency. There is no automatic exchange-rate feed. Check contract sizes, volume limits, pip conventions and applicable charges in your broker’s symbol specifications.
These are estimates, not order instructions. Fees, spreads, slippage, price gaps and changing conversion rates can increase actual losses. Margin availability is not a safe position-size limit.
Frequently asked questions
How is the suggested lot size calculated?
The tool divides your risk budget by the price distance to your stop, contract size and currency conversion, then rounds down to the chosen volume step.
Are the example values live market data?
No. Inputs are editable examples, not live quotes or broker specifications. Check current prices and contract terms with your broker.
Can I use this estimate as an order instruction?
No. The tool is educational and does not place trades. Trading costs, conversion rates and price moves can change the actual result.