Forex Position Size Calculator
Calculate the lot size that fits a cash risk budget, a stop distance and a pip value. Then round down using your broker’s volume rules.
Enter your inputs
How it works
Cash budget = equity × risk % ÷ 100. Loss estimate per lot = stop pips × pip value per lot + extra round-trip cost per lot. Divide the budget by the loss per lot, cap it at the broker maximum, and round down to the allowed volume grid starting at the broker minimum.
Worked example
At 10,000 account currency units, 1% budgets 100. A 25-pip stop at 10 per pip per lot plus 7 in costs gives 257 per lot. A 0.01-lot grid rounds the raw 0.389105 lots down to 0.38 lots, with a modeled loss of 97.66.
What the result assumes
Use equity and pip value in the same currency. Enter extra costs only if they are outside your entry-to-stop distance. The estimate excludes gaps, unentered slippage, minimum ticket fees and margin. If the broker minimum is above the modeled size, the calculator shows that no volume fits.
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Forex Pip Value Calculator
Convert a one-pip price change into quote and account currency using a forex contract size and a conversion rate you supply.