Free Trading Calculators for Forex, Stocks, Crypto & Futures

A position size calculator tells you exactly how many lots, units, or shares to trade based on your account balance, the percentage you are willing to risk, and your stop loss distance. It removes guesswork from trade sizing and enforces consistent risk management on every trade — whether you trade forex, stocks, crypto, or futures.

Lot size = (Account Balance × Risk %) ÷ (Stop Loss in pips × Pip Value per lot). For example, with a $10,000 account risking 1% ($100), a 20-pip stop loss, and a pip value of $10 per standard lot: Lot size = $100 ÷ (20 × $10) = 0.5 standard lots. The position size calculator above does this instantly as you type.

Pip value is the monetary value of a one-pip price movement per lot size. For EUR/USD at one standard lot (100,000 units), one pip equals approximately $10. For a mini lot (10,000 units), one pip equals $1. Pip value differs by currency pair and account currency — using the wrong pip value leads to incorrect position sizing and unintended risk exposure.

Professional traders typically risk 1–2% of their account per trade. If each loss is 1% of the remaining balance, 50 consecutive losses reduce the account by approximately 39.5% (1 − 0.99^50). This illustration excludes fees and slippage and does not guarantee that losses will stay within a planned stop. Risking more than 2% per trade dramatically increases the probability of deep drawdowns that are difficult to recover from psychologically and mathematically.

Yes — every calculator on TradeCalc is completely free with no account, no subscription, and no hidden fees. All calculations run instantly in your browser. No data is sent to any server.