Position Size Calculator: How to Calculate Forex Lot Size in Seconds
Calculate the exact lot size for your next trade based on account size, risk, and stop distance.
A pip looks tiny on the chart but it controls every dollar of profit and loss you'll ever make. This guide shows you exactly how the Pip Value Calculator computes the dollar value of a single pip for any pair, account currency, and trade size.
Every profit and loss number on your trading statement is a function of one thing: the dollar value of a pip multiplied by the number of pips the market moved against or in favor of your trade. Get the pip value wrong and every risk plan you build is built on sand. The Pip Value Calculator removes the guesswork — it tells you, in your account currency, exactly what a one pip move means for any pair and any position size.
A pip — short for percentage in point — is the fourth decimal place of most currency pairs. On EURUSD, a move from 1.0850 to 1.0851 is one pip. For pairs that include the Japanese yen, a pip is the second decimal place: a move on USDJPY from 150.10 to 150.11 is also one pip. The pip is the standardized unit of price movement, but the dollar value of that one pip depends entirely on the pair and how much you are trading.
Pip value equals one pip in decimal form, divided by the current exchange rate of the pair, multiplied by the trade size in units. For non-JPY pairs, one pip in decimal form is 0.0001. For JPY pairs, it is 0.01. A standard lot is 100,000 units, a mini lot is 10,000 units, and a micro lot is 1,000 units.
Suppose you are trading one standard lot of EURUSD at 1.0850. Pip value equals 0.0001 divided by 1.0850, multiplied by 100,000 units. The result is approximately 9.22 USD per pip. For most USD-quoted pairs where USD is the quote currency, the pip value simplifies to roughly 10 USD per standard lot — but the calculator always returns the precise figure based on the live rate you enter.
The most common error in pip math is treating JPY pairs the same as other majors. A pip on USDJPY is 0.01, not 0.0001 — a 100x difference. If you apply the wrong decimal to a position size calculation, you risk 100 times what you intended on every trade. Always double-check the pair type before placing a JPY trade, or simply let the Pip Value Calculator handle the decimal automatically.
Get the exact dollar value of one pip for any pair and any trade size — instantly.
Calculate the exact lot size for your next trade based on account size, risk, and stop distance.
Find out your trade's risk-to-reward ratio and the win rate it needs to be profitable.