Forex Lot Size Calculator

How to use

1. Enter your account balance.
2. Set the percent of the account you will risk on this trade.
3. Enter the stop-loss distance in pips and the pip value per standard lot.
4. Read the dollar risk, the lot size, and the estimated unit exposure.

About this tool

This lot size calculator turns a risk budget into a position size. Enter your account balance, the percentage you are willing to lose on one trade, the stop-loss distance in pips, and the pip value per standard lot; the tool computes the dollar risk, the lot size that keeps a stop-out inside it, and the implied unit exposure. With the defaults, a 5,000 dollar account risking 1 percent budgets 50 dollars; against a 30-pip stop at 10 dollars per pip per lot, that is 50 divided by 300, about 0.17 lots or roughly 16,667 units. Position sizing this way is arithmetic, not a forecast of whether the trade wins. Position sizing math assumes the entered pip value and stop execute as planned; slippage and gaps can exceed any stop; not investment advice.Conventions worth knowing: a standard lot is 100,000 units of the base currency, and on pairs quoted in US dollars it moves 10 dollars per pip per lot, so a 0.01 micro lot moves about 0.10 dollars per pip. Many traders cap risk at 1 to 2 percent per trade. Leverage changes margin required, never the loss a stop defines.

FAQ

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