Position Size Calculator - Risk-Based Lot Sizing for Crypto & Forex

Calculate the optimal position size based on your account balance, risk percentage, entry price, and stop loss. The most important tool for any trader.

Position Size Calculator

Account Balance ($)

Risk per Trade (%)

Entry Price ($)

Stop Loss ($)

0.100000

Position Size

$5000.00

Position Value

$200.00

Risk Amount

4.00%

Stop Distance

💡 Why Use This Position Size Calculator?

Correct position sizing is the single most important trading skill - it determines whether a losing streak destroys your account or leaves you standing. Enter your account size, risk %, and stop loss to get the exact position size in seconds.

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Pro Tip: Professional traders risk 0.5-2% per trade. Risking more than 2% per trade creates a real chance of ruin even with a 60% win rate - use this calculator to stay disciplined.

Frequently Asked Questions

How do I calculate position size for crypto trading?›

Position Size = (Account Balance × Risk %) ÷ (Entry Price − Stop Loss Price). This calculator does the math automatically - enter your values and get the exact number of coins to buy.

What is the best risk percentage per trade in crypto?›

Most professional traders use 1-2% per trade. In volatile crypto markets with 10-50% daily swings, 0.5-1% is even safer - keeping any single loss from significantly impacting your account.

How does position size differ for Bitcoin vs altcoins?›

Altcoins have wider average true ranges and lower liquidity, so experienced traders use smaller position sizes (0.5-1% risk) vs Bitcoin (1-2%). This calculator works for any asset.

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