Forex Lot Size Calculator (Risk Calculator)
Determine your forex position size, money at risk, and pip value using your account balance, risk limit, and stop loss.
Plan your position
Set the maximum amount you are prepared to risk.
Risk-management estimate. Verify pip conventions, contract size, conversion rates, minimum lot increments, and execution conditions with your broker. This calculator does not provide investment advice.
About this tool
Calculate the Right Lot Size for Your Forex Trade
The Forex Lot Size Calculator helps traders determine an appropriate position size
based on account balance, maximum acceptable risk, and stop-loss distance. It shows
the calculated lot size, number of currency units, pip value, and total money at risk.
How the Lot Size Calculation Works
Enter your account balance, select a currency pair, specify your stop loss in pips,
and choose how much you are prepared to risk. Risk can be entered as a percentage of
your account or as a fixed monetary amount.
Position units = Risk amount ÷ (Stop loss in pips × Pip value per unit)
The calculated units are then divided by the instrument’s contract size to determine
the final lot size.
Calculator Features
- Risk calculation using a percentage or fixed amount
- Major forex pairs, cross pairs, JPY pairs, and XAUUSD
- Automatic pip-size selection for supported instruments
- Customizable units per standard lot
- Account currency conversion when required
- Calculated lot size and total position units
- Money-at-risk and position pip-value breakdown
- Automatic browser storage for your latest settings
Why Position Sizing Matters
Position sizing is an important part of forex risk management. Using a consistent
risk limit can help traders avoid taking positions that are too large relative to
their account balance. The calculator makes this relationship easier to understand
before a trade is opened.
Risk Disclaimer
This calculator provides estimates for planning purposes only. Actual results may
differ because of broker contract specifications, minimum lot increments, currency
conversion rates, spreads, slippage, and execution conditions. Always verify the
final position size with your broker. This tool does not provide investment advice.