Position Size Calculator
Calculate the correct lot size to risk a fixed percentage of your account.
Lot Size
-
standard lots
Amount at Risk
-
USD
Formula
Risk Amount = Balance × (Risk % ÷ 100)
Lot Size = Risk Amount ÷ (Stop Loss × Pip Value)
Risk no more than 1–2% of your account per trade.
What Is Position Sizing in Forex?
Position sizing is the process of calculating how many lots to trade so that a losing trade - stopped out at your predetermined stop-loss level - costs no more than your chosen risk amount. It is the single most important risk management discipline in forex trading.
Professional traders in the UAE and Gulf region typically risk 1–2% of their account per trade. This keeps any single loss small enough that a run of losing trades does not wipe the account.
Position Size Formula
Formula:
Example:
Account: $10,000 · Risk: 1% ($100) · Stop-loss: 50 pips · Pair: EUR/USD
Pip value on EUR/USD standard lot = $10
Lots = $100 ÷ (50 × $10) = 0.20 lots (20,000 units)
Lots = Risk Amount ÷ (Stop-Loss in Pips × Pip Value per Lot)Example:
Account: $10,000 · Risk: 1% ($100) · Stop-loss: 50 pips · Pair: EUR/USD
Pip value on EUR/USD standard lot = $10
Lots = $100 ÷ (50 × $10) = 0.20 lots (20,000 units)
Position Size Examples by Account Size
| Account | Risk 1% | 50-pip SL on EUR/USD | Position size |
|---|---|---|---|
| $1,000 | $10 | 50 pips | 0.02 lots |
| $5,000 | $50 | 50 pips | 0.10 lots |
| $10,000 | $100 | 50 pips | 0.20 lots |
| $50,000 | $500 | 50 pips | 1.00 lot |
Frequently Asked Questions
How much should I risk per forex trade?
Most professional traders risk 1–2% of their account per trade. At 1% risk, you need 50 consecutive losing trades to lose half your account - which gives you enough runway to recover. Risking 5% or more per trade is considered high risk and common among traders who blow accounts.
What is a good position size for a $1,000 account?
At 1% risk ($10) with a 50-pip stop-loss on EUR/USD, the correct position size is 0.02 lots (2,000 units). Many beginners trade 0.1 or 1 lot without calculating, risking 10–100 times more than they should.
Does position size change for different currency pairs?
Yes. Pip value differs by pair, especially for JPY pairs where one pip = 0.01 instead of 0.0001. Always calculate using the correct pip value for the pair you are trading. Use the pip value calculator to find the right number before entering the position size formula.