What is 1 lot in forex? Standard, mini, micro explained
By Ken Chigbo, Founder, KenMacro. Published 2026-05-13.
Direct answer
In forex, 1 standard lot equals 100,000 units of the base currency. On EUR/USD, 1 standard lot moves roughly $10 per pip. Smaller variants exist: a mini lot is 10,000 units ($1 per pip), a micro lot is 1,000 units ($0.10 per pip), and a nano lot is 100 units. Lot size directly determines pip value and therefore the monetary risk carried on each trade.
The term ‘lot’ is the standardised unit of trade size in the foreign exchange market. When the desk references 1 lot in forex, the default meaning is 1 standard lot, which equals 100,000 units of the base currency in the pair being traded. On EUR/USD, that means buying or selling 100,000 euros against the equivalent value in US dollars. The convention exists so that quotes, spreads, and pip values remain comparable across brokers and platforms worldwide.
Lot sizes were standardised so that the over-the-counter forex market could function with the same precision as a centralised exchange. Before retail platforms existed, interbank dealing was conducted in round amounts of 1 million or more, and the 100,000-unit standard lot was carved out as the smallest institutional clip. Retail brokers later introduced fractional lots so that smaller accounts could access the same pricing without taking on full institutional notional.
There are four commonly referenced lot sizes. A standard lot is 100,000 units of base currency, written as 1.00 in most trading platforms. A mini lot is 10,000 units, written as 0.10. A micro lot is 1,000 units, written as 0.01. A nano lot, which is rarer and not offered by every broker, is 100 units, written as 0.001. Each step represents a tenfold reduction in size.
Pip value scales linearly with lot size. On a dollar-quoted pair such as EUR/USD, 1 standard lot delivers approximately $10 of profit or loss for every 1 pip of price movement. A mini lot delivers $1 per pip. A micro lot delivers $0.10 per pip. A nano lot delivers $0.01 per pip. These figures hold for any pair where the US dollar is the quote currency; cross pairs require a separate conversion using the current exchange rate.
Because pip value depends on lot size, lot size is the single most important variable in setting risk per trade. A trader holding 1 standard lot of EUR/USD through a 50 pip adverse move loses roughly $500. The same 50 pip move on a micro lot costs $5. The price chart is identical in both cases; only the monetary exposure differs. This is why the desk treats lot size as a risk lever rather than a measure of confidence.
Position sizing typically works backwards from a fixed monetary risk amount. If an account is willing to risk $100 on a trade and the stop loss is 25 pips away, the appropriate position size on EUR/USD is $100 divided by 25 pips, which equals $4 per pip, or 0.4 mini lots. Working in this direction keeps risk constant across trades regardless of how wide or tight the stop happens to be.
Lot size also interacts with leverage and margin. A standard lot of EUR/USD represents 100,000 euros of notional value, roughly $108,000 at typical exchange rates. With 1:30 leverage, the required margin is around $3,600. With 1:500 leverage, it falls to roughly $216. Margin requirements set the minimum capital needed to hold the position, but they do not change the underlying pip value or the absolute size of profit and loss.
Cross pairs and non-dollar-quoted pairs require an extra step. On GBP/JPY, for example, 1 standard lot is 100,000 British pounds, and the pip value is denominated in yen, which must then be converted back into the account currency at the prevailing JPY rate. Most platforms display the pip value automatically, but understanding the underlying mechanic is useful when reconciling profit and loss against expectations.
Retail platforms now allow lot sizes to be entered in fractional increments down to 0.01 in most cases. This flexibility means traders rarely need to think in terms of whole lots; the practical question is how many units of base currency the account is willing to put at risk for a given stop distance. The KenMacro desk recommends building position sizing into a checklist so that lot selection becomes a calculation rather than an instinct.
Finally, the relationship between lot size and account size deserves attention. A $1,000 account trading 1 standard lot on EUR/USD is exposing the full account to roughly 10 pips of adverse movement, which is well within normal intraday noise. The same account trading 0.01 lots would need a 10,000 pip move to wipe out, which is impossible on a major pair. Matching lot size to account size is the most basic form of risk control.
Lot size sets risk, not conviction
Increasing lot size because a setup feels strong is one of the fastest ways to damage an account. The desk treats lot size purely as a function of the monetary amount being risked and the distance to the stop loss. Conviction belongs in the decision to take the trade, not in the size of the position. Keeping risk per trade constant across all trades, regardless of how attractive any single setup appears, is the discipline that allows a strategy’s edge to compound over time.
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Pip value changes with the quote currency
The clean $10-per-pip figure for 1 standard lot only applies when the US dollar is the quote currency and the account is denominated in US dollars. On pairs such as USD/JPY or EUR/GBP, the pip value must be converted into the account currency at the current rate. Trading platforms calculate this automatically, but traders managing risk by hand should verify the figure before sizing a position, particularly on yen crosses where pip definitions can be misread.
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Margin is not the same as risk
The margin required to open a position is the capital locked up by the broker, not the amount at risk. A 1 standard lot EUR/USD position might require only $216 in margin at 1:500 leverage, but a 100 pip adverse move still costs $1,000. Confusing margin with risk leads traders to open positions far larger than their account can tolerate. Always size positions against the worst-case monetary loss, not against the minimum margin needed to open the trade.
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Frequently asked
How much is 1 lot in forex in dollars?
One standard lot in forex is 100,000 units of the base currency. On EUR/USD, that represents roughly $108,000 of notional exposure at typical exchange rates. The dollar value shifts with the underlying exchange rate, but the unit count of 100,000 base currency remains fixed by convention across all brokers.
What is the pip value of 1 lot on EUR/USD?
On EUR/USD, 1 standard lot delivers approximately $10 of profit or loss for every 1 pip of price movement. A mini lot (0.1) delivers $1 per pip. A micro lot (0.01) delivers $0.10 per pip. These figures apply when the account is denominated in US dollars and the quote currency is also US dollars.
What is the difference between a standard lot, mini lot, and micro lot?
A standard lot is 100,000 units of the base currency, written as 1.00 on most platforms. A mini lot is 10,000 units, written as 0.10. A micro lot is 1,000 units, written as 0.01. Each step represents a tenfold reduction in position size and a tenfold reduction in pip value.
How many pips is 1 lot worth?
One lot is not worth a fixed number of pips; rather, lot size determines what each pip is worth in money. On EUR/USD, 1 standard lot makes each pip worth approximately $10. Profit or loss equals lot size multiplied by pip value multiplied by the number of pips moved from entry to exit.
Is 0.01 lot a micro lot?
Yes, 0.01 lot is the standard notation for a micro lot, which equals 1,000 units of the base currency. On EUR/USD, a 0.01 lot position generates roughly $0.10 of profit or loss per pip of price movement. Micro lots are the most common starting size for small retail accounts on regulated brokers.
How do I calculate the right lot size for my trade?
Divide the monetary amount willing to be risked by the stop loss distance in pips, then convert the result into lot size using the pip value of the pair. For example, risking $100 with a 25 pip stop on EUR/USD gives $4 per pip, which equals 0.4 mini lots, or 4 micro lots.
Does leverage change the size of 1 lot?
No, leverage does not change lot size. One standard lot is always 100,000 units of the base currency, regardless of whether the account uses 1:30 or 1:500 leverage. Leverage only changes the margin required to open the position, not the notional exposure or the pip value attached to the trade.
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