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Free Forex Position Size Calculator

Calculate lot size, pip value, margin, and risk percentage for forex pairs and XAUUSD using live prices. Use the result to size your trade idea before entry, not as a trade signal.

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TRADE SETTINGS

USD

CALCULATION RESULTS

Select a pair and enter account, risk, and stop-loss values to calculate position size.
STANDARD LOTS (MT4/MT5)
--
Exact lot math: --.
LOTS
Actual Risk --
EXACT UNITS (OANDA/NANO)
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UNITS
Exact Risk --
Required Margin (Exact Units) --
Account Health ---
📚 Recommended reading

Want to go deeper on position sizing, drawdown control, and risk of ruin?
Explore our curated list of books focused on practical risk management.

Explore Risk management books →
Forex Risk Per Trade Build a 1% risk workflow before entering the trade. XAUUSD Lot Size Understand why gold uses different contract math. Strength Confirmation Use strong vs. weak context before sizing the idea.

Mastering Risk Management: Forex & Gold

Step-by-Step Usage Guide

Position sizing is the math that keeps you in the game. It ensures that a string of losses doesn't wipe out your account.

  • 1. Determine Stop Loss: Analyze the chart and find your technical invalidation point (e.g., below a Swing Low). Measure this distance in Pips. .
  • 2. Input Balance: Enter your current account equity.
  • 3. Set Risk %: We recommend 1% to 2% per trade. This means if the trade hits your Stop Loss, you only lose 1% of your account.
  • 4. Select Leverage: Choose your broker's leverage setting (e.g., up to 1:50 for USA, 1:500 for Offshore). This checks if you have enough margin to open the trade.

Strategy: The "Fixed Fractional" Model

This tool is built on the Fixed Fractional money management method. As your account grows, your position sizes (lots) naturally increase. As your account draws down, your position sizes decrease.

🚀 The "Prop Firm" Survival Rule

Most Prop Firms (like FTMO or MFF) have a 5% Daily Drawdown limit.

Strategy: Set your Risk Ratio to 0.5%. This gives you a "buffer" of 10 consecutive losses in a single day before you lose your funded account. Never risk 2% on a Prop Firm account.

⚠ī¸ Regulatory Check (GEO)

If you are in the USA (NFA) or Europe (ESMA), your leverage is capped (up to 1:50 or 1:30, depending on the pair and broker). If this calculator shows a "Margin Error," you must reduce your position size or tighten your Stop Loss.

Mastering Risk Management: Forex & Gold

Gold (XAUUSD) vs Forex Lots

Calculating lots for Gold is different from Forex pairs like EURUSD. This calculator handles the math automatically:

đŸĒ™ Gold (XAUUSD) Math

Contract Size: 1 Standard Lot of Gold = 100 Ounces (Not 100,000 units).
Pip Value: A 1 pip move (0.01) on 1 Lot = $1.00 USD.
Note: While Forex uses 100,000 units per lot, Gold uses 100. Always ensure you are calculating for XAUUSD specifically.