Calculateur de Taille de Position
Calculez la taille de lot optimale en fonction de la taille de votre compte et de votre tolérance au risque
Recommandé: 1-2% par trade
Utilisez le Calculateur de Pip si inconnu
What is Position Sizing in Forex?
Position sizing is one of the most critical aspects of successful forex trading. It refers to determining the number of units or lots to trade based on your account size, risk tolerance, and the specific trade setup. Proper position sizing ensures you maintain consistent risk across all trades.
The golden rule of position sizing is to never risk more than a small percentage of your trading capital on any single trade. Professional traders typically risk 1-2% per trade.
Why Position Sizing Matters: Even with a 50% win rate, poor position sizing can lead to account depletion. Conversely, good position sizing with proper risk management can lead to consistent profitability even with a lower win rate.
How to Calculate Position Size
The Position Size Formula
Position Size (lots) = (Account Balance × Risk %) ÷ (Stop Loss in Pips × Pip Value)
Example:
Account Balance: $10,000
Risk Per Trade: 2%
Stop Loss: 50 pips
Pip Value: $10 (standard lot)
Position Size = ($10,000 × 2%) ÷ (50 × $10)
Position Size = $200 ÷ $500 = 0.4 lots
Step-by-Step Guide
- Determine your account balance and the percentage you want to risk
- Calculate your risk amount in money (Account Balance × Risk %)
- Measure your stop loss distance in pips
- Find the pip value for your currency pair (use Pip Calculator)
- Divide your risk amount by (stop loss pips × pip value)
- The result is your optimal position size in lots
Frequently Asked Questions
What percentage should I risk per trade?
Most professional traders risk 1-2% of their account per trade. This allows you to survive a series of losses without significant drawdown. Conservative traders might risk only 0.5-1%, while aggressive traders might risk up to 5%.
Can I use this calculator for stocks or crypto?
Yes! While designed for forex, this calculator works for any market. For stocks, instead of pips, use the price difference (entry price - stop loss price). For crypto, adjust the pip value based on the price increments.
What if my calculated position size is too large?
If the calculated position size exceeds your broker's maximum lot size or your comfort level, you have two options: reduce your risk percentage or widen your stop loss (if your strategy allows). Never override what the calculator recommends.
Should I adjust position size after wins or losses?
By using a percentage-based approach, your position size automatically adjusts with your account balance. After winning trades, your position size naturally increases (as your account grows). After losses, it decreases (protecting your smaller account).
What's the difference between position sizing and money management?
Position sizing is a component of money management. Money management encompasses all aspects of managing your trading capital, including position sizing, risk per trade, maximum daily loss limits, profit targets, and overall portfolio allocation.
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