Free Trading Calculators
Every trade needs two numbers before you click buy: how big the position should be, and what win rate your reward:risk has to beat. These calculators work both out in your browser. No signup, no chart upload, no AI.
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The calculators
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Position Size Calculator
Free position size calculator: enter account size, risk percent, entry, and stop loss to get your share size instantly. No signup, no AI, pure risk math.
Open calculatorBreakeven Win Rate Calculator
Free breakeven win rate calculator: enter your reward:risk ratio (or entry, stop, target) to see the minimum win rate to break even, plus expectancy.
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How they fit together
Size it, check the bar, then grade the setup
- 1
Size the trade
Start from your stop. The position size calculator turns your account size and risk percent into a share or contract count, so a loss costs what you planned and not a dollar more.
- 2
Check the win rate you need
Your target and stop set a reward:risk, and that ratio sets the minimum win rate to break even. The breakeven calculator shows that bar and your expectancy at your real win rate.
- 3
Grade the setup itself
Neither calculator knows if the chart is any good. That part is a read of structure and confluence, which is what SnapPChart grades from a screenshot, A+ to F, with an entry, stop, and targets.
The math is done. Is the setup worth taking?
Upload a chart screenshot and SnapPChart grades the setup quality in seconds, with the levels you would plug straight into these calculators.
Upload a Chart ScreenshotThese calculators are for planning purposes only and are not financial advice. They compute results from the numbers you enter and do not know your broker's fees, slippage, margin requirements, or your other open positions. Trading involves risk of loss.