EURUSD lot size calculator

EURUSD is quoted in US dollars, so for a USD account the maths is the simplest of any pair: one pip (0.0001) on one standard lot of 100 000 euros is worth exactly $10, on a mini lot (0.10) $1, and on a micro lot (0.01) 10 cents.

To risk a fixed amount, divide that amount by the stop in pips times $10. Risking $100 with a 20-pip stop gives 0.50 lot; the same $100 with a 10-pip stop gives 1.00 lot. The calculator below does the same with your numbers and rounds down to the broker’s volume step, so you never risk more than you meant to.

Account balance (USD)Risk per trade (%)Stop loss (pips)Contract size per lotCheck with your brokerLot step

Lot size: 0.50
Loss at the stop: $100.00; planned $100.00
EURUSD: per pip, 1 lot: $10.00

EURUSD lots are rounded down to the lot step, so the loss never exceeds the risk. No prices are fetched: everything is computed in your browser from the numbers above.

EURUSD lot sizes for a $10 000 account

Stop (pips)	0.5% risk ($50.00)	1% risk ($100.00)	2% risk ($200.00)
10	0.50	1.00	2.00
20	0.25	0.50	1.00
40	0.12	0.25	0.50

EURUSD, 100,000 per lot: one pip is $10.00 per lot. Lots rounded down to 0.01.

Contract size: check yours for EURUSD

A standard forex lot is 100 000 units of the base currency at almost every broker.

In MetaTrader, right-click EURUSD in Market Watch → Specification: “Contract size” is the number to put in the calculator. The formula is the same for every instrument: lots = risk ÷ (stop distance × contract size × quote-to-account rate).

Did your EURUSD trades risk what you planned?

A calculator sizes the next trade. The journal checks the last hundred: it reads every MT4/MT5 EURUSD trade, shows the real R of each from its stop, and with a max-loss-per-trade rule marks the trades that lost more than you allowed. Free for one account.

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Questions

›How much is one pip on EURUSD?

$10 per standard lot (100 000 EUR), $1 per mini lot and $0.10 per micro lot, for a USD account. In another account currency it is converted at the current rate.

›What lot size should I use on a $1 000 account?

At 1% risk ($10) with a 20-pip stop, 0.05 lot. Wider stops mean smaller lots; the risk in money stays the same.

›Does the spread change the lot size?

The spread is a cost on top of the stop. Some traders add it to the stop distance before sizing, so the risk includes it.