Position Size Calculator
Use our free position size calculator to calculate the correct position or lot size based on your account balance, risk percentage, and stop loss. Suitable for Forex, Crypto, and prop firm traders.
Position sizing determines how large a trade can be based on predefined risk.
Use our free position size calculator to calculate the correct position or lot size based on your account balance, risk percentage, and stop loss distance.
How it works
1. Enter your account balance
2. Choose your risk percentage per trade
3. Enter your stop loss (pips or price)
4. View your optimal position size
What is a Position Size Calculator
A position size calculator helps traders determine how large a trading position can be while keeping risk under control.
By using your account balance, risk percentage, and stop loss distance, you can calculate the exact position size (or lot size) needed to risk the same amount on every trade. This ensures consistent risk management across different instruments and market conditions.
This tool is designed for Forex and Crypto traders, as well as prop firm traders who must strictly follow risk and drawdown rules.
Why is position sizing important in trading
Incorrect position sizing is one of the most common reasons traders experience large drawdowns or blow accounts.
Without proper position sizing, traders often risk too much on a single trade, even if their strategy is profitable.
Using a position size calculator allows you to:
– Control risk on every trade
– Maintain consistent risk exposure
– Protect your account from large losses
– Stay within prop firm risk and drawdown limits
What is a lot size?
The lot size shows how large your trade position is in the market.
In simple terms, it determines how much money you gain or lose for every pip movement.
On most trading platforms:
– 1.00 lot = 100,000 units (standard lot)
– 0.10 lot = 10,000 units (mini lot)
– 0.01 lot = 1,000 units (micro lot)
The larger the lot size, the faster your profits and losses change.
How to use the Position Size Calculator
Using the position size calculator only takes a few seconds:
– Enter your account balance
– Select your risk percentage per trade
– Enter your stop loss distance
– Click Calculate to view your position size
The result updates instantly, allowing you to adjust risk or stop loss before entering a trade.
Example Position Size Calculation
Suppose you have a $10,000 trading account and risk 1% per trade.
– Risk per trade: $100
– Stop loss: 20 pips
Based on these inputs, the calculator will show the exact position size required to risk $100 on the trade.
Use the calculator above to adjust your risk percentage or stop loss and instantly see how your position size changes.
Why use our Position Size Calculator
Our position size calculator is built for traders who need accuracy and consistency.
✔ Risk-based position sizing
✔ Supports Forex and Crypto instruments
✔ No registration required
✔ Instant calculations
✔ Ideal for prop firm and funded account traders
This tool helps you trade with discipline and manage risk professionally.
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Disclaimer
This position size calculator is provided for educational purposes only.
Results are estimates and may vary depending on broker, instrument, and market conditions.
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Have questions about position sizing or risk management?
Risk Disclaimer
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