Forex Exchange Console

Account Balance ($) Account Currency USD Conversion Rate 1 account currency unit equals this many USD. Desired Risk Percentage (%) Stop Loss Distance Allocation (Pips)

Advanced Broker Specification Override Drawer ▼

Broker Contract Specification Size

Minimum Tradeable Lot Broker Lot Step

Confirm the EURUSD contract size in terminal specifications, especially if a broker presents cent accounts, nano lots, or institutional execution tiers.

The Formula

To calculate your position size in lots, use the following formula:

Position Size = (Account Balance × Risk Percentage) ÷ (Stop Loss in pips × Value per Pip)

Key EURUSD Specs

Before calculating, check your broker's specific specifications because these can vary by platform and symbol.

• Contract Size: Default model uses 100,000 base currency units per standard lot, which is the standard forex major contract structure.
• 1 Pip Value: For EURUSD with a USD sizing basis, a 1 pip move on 1.00 standard lot is approximately $10.00.

Step-by-Step Example

Say you have a $10,000 account, want to risk 1% of it, and your stop loss is 12 pips away.

1. Determine your maximum risk: $10,000 × 0.01 = $100.
2. Calculate full-lot stop risk: 12 pips × $10 per pip = $120 risk on 1.00 lot.
3. Determine lot size: $100 ÷ $120 = 0.83 lots before broker lot-step rounding.

EURUSD Contract & Calculation Reference Guide

EURUSD is one of the most standardized instruments in retail forex, but position sizing still requires exact pip and account-currency handling. In the standard model, 1.00 lot equals 100,000 units of the base currency, which is EUR in the EURUSD pair. A pip is normally the fourth decimal place. If price moves from 1.0850 to 1.0851, that is a one pip move. For a standard lot on EURUSD, one pip is commonly valued at approximately 10 USD because USD is the quote currency.

The basic calculation starts with cash risk. A trader with a 10,000 account risking 1% has a 100 unit risk budget. The stop loss distance determines how many pips that risk is spread across. If the stop loss is 12 pips, the calculator divides the risk budget by the pip value implied by the contract size and pip multiplier. With a 100,000 unit contract and a 0.0001 pip multiplier, the model reflects the standard forex relationship between lots, pips, and quote currency value.

Account currency matters. If the account is denominated in USD, the displayed cash risk and sizing basis are the same. If the account is in EUR, GBP, ZAR, or another currency, the calculator uses the manual USD conversion rate to translate the risk budget into the USD basis used by the EURUSD pip-value model. This avoids pretending that live exchange rates are available inside a static calculator. The user can adjust the conversion rate to match the broker account, the current market rate, or a conservative planning assumption.

EURUSD broker settings are generally more consistent than index or metal CFDs, but they are not universal. Some accounts use cent balances, micro-lot restrictions, or different minimum volume steps. A mathematical result like 0.833 lots may not be executable if the broker only allows 0.01 or 0.10 lot increments. The Big42 Trading calculator rounds the final position size down to the configured lot step. This conservative rounding is important because rounding up can create more risk than the trader intended. Always confirm contract size, minimum lot, and volume step in the trading terminal before placing an order.