Free trading tool

Position Size Calculator

Decide how much you are willing to lose first, then let the maths pick the lot size. Position sizing is the single most important habit in risk management.

Many traders keep this at 1–2% or less.
Suggested position size
Amount at risk$10.00
Position size0.03 lots
Units3,000
Actual risk at this size$9.00
Pip value per lot$10.00

Rounded down to the nearest 0.01 lot so you never risk more than the amount you chose.

How it works

The calculator uses the standard fixed-risk formula:

Lots = (Balance × Risk %) ÷ (Stop-loss in pips × Pip value per lot)

Example: a $5,000 account risking 1% ($50) with a 25-pip stop on EUR/USD (pip value $10 per lot) gives 50 ÷ (25 × 10) = 0.20 lots. If the trade hits the stop, you lose about $50 — no more.

The result is rounded down to the nearest 0.01 lot so the real risk is never above your chosen percentage. A wider stop-loss means a smaller position; a tighter stop allows a larger one — the dollar risk stays the same.

Frequently asked questions

What percentage should I risk per trade?
There is no single right answer, but many traders risk 1–2% of their account or less on each trade so that a losing streak does not wipe out the account. Only you can decide what suits your situation.
Does this work for gold?
Yes — choose Gold (XAU/USD). The tool assumes 1 pip = 0.10 and 100 oz per lot ($10 per pip per lot). Check your broker’s contract specification.
Why is my lot size “below 0.01”?
With a small balance, a low risk % or a very wide stop, the smallest tradable lot can already risk more than you intended. Reduce the stop distance, accept a slightly higher risk, or use a cent/micro account.
Does it include spread and commission?
No. Spread, commission and slippage add to your real cost, so leave a margin of safety.

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Disclaimer: these calculators are for education and planning only and are not financial advice. Results are estimates — real pip values, spreads, commissions and swaps differ by broker. Trading leveraged products involves a high risk of loss. Read the full risk disclosure.