Live Market AI
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Position size calculator

Work out how much to buy or sell so that hitting your stop costs a fixed, known amount. Enter your balance, the share of it you are willing to risk, your entry and your stop.

Cash at risk
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Stop distance
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Position size (units)
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Position size (lots)
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Nothing is sent anywhere — the arithmetic runs in your browser.

The arithmetic, shown openly

A calculator you cannot check is not much use, so here is exactly what it does:

cash at risk = balance × risk%
stop distance = |entry − stop|
position size = cash at risk ÷ stop distance
lots = position size ÷ units per lot

With a $10,000 balance risking 1%, buying gold at 2350 with a stop at 2335: $100 at risk over a 15-point stop is 6.67 units, or 0.067 lots at 100 units per lot.

Two things this calculator cannot do

It cannot guarantee your loss. A stop is an instruction to exit, not a promise of price. In a fast or gapping market your fill can be worse than the stop level, and the real loss larger than the figure above. Position sizing limits your intended risk, not your worst case.

It cannot tell you what to risk. There is no correct percentage, and anyone quoting one as a rule is guessing. What matters more is deciding the number before the trade and keeping it consistent, so a losing run stays survivable.

Know the size. Now read the setup.

Live Market AI runs a signal engine over the market you are watching — trend, momentum, market structure and key levels — and publishes tracked signals with entry, stop and targets. Every published signal is followed to its result, and both wins and losses are shown.

Other free tools

Risk / reward calculatorYour reward-to-risk ratio, and the win rate it needs to break even. Pip value calculatorWhat one pip is worth at your position size. Compound calculatorWhat a rate compounds to over a number of periods.

Live Market AI provides market data, technical analysis and AI-assisted research. It is not financial advice and no result is a promise of profit. Trading carries risk, including the loss of your capital. livemarketai.com