Risk Per Trade Calculator

Risk per trade is the cornerstone of professional trading money management. The fixed percentage method ensures that no single loss can destroy your account, because losses are always proportional to your current equity.

Core formula: Risk Amount = Account Balance × Risk Percentage / 100

That is the whole of what this page works out, and it is deliberately one step. The number it gives you is the budget: the most you are prepared to lose if this trade is wrong. Turning that budget into a share count or a contract count needs the entry and the stop as well, which is the position size calculator.

Worked example: Account: $25,000. Risk per trade: 1%. Risk Amount = $25,000 × 1% = $250

Every trade in that account is then sized so that being stopped out costs $250, whatever the instrument. A stock with a $7.00 stop distance buys 35 shares. An E-mini S&P 500 contract with a 4-point stop risks 4 × $50 = $200, so the same budget buys one contract and leaves $50 unused. The instrument changes, the $250 does not, and that is the entire point of the method.

Standard professional risk guidelines:

• 0.5–1% per trade: Conservative, recommended for most traders
• 1–2% per trade: Moderate; experienced traders
• 2–3% per trade: Aggressive; high-conviction trades only
• 3–5% per trade: past where any professional desk would go
• 5%+ per trade: Gambling-level risk; avoid

The calculator has a line for each of those five bands, so whatever you type gets read against the table rather than against silence.

The math of survival: Because each trade risks a percentage of what is left rather than a fixed sum, the account shrinks geometrically and never technically reaches zero. What matters is how fast it halves.

At 1% risk it takes 69 consecutive losses to fall below half your starting equity. At 5% it takes 14. That is not five times worse, it is the difference between a streak nobody has ever had and a bad fortnight.

The recovery arithmetic is the part people skip. A 50% drawdown needs a 100% gain to get back to even. Down 20%, you need 25%. Down 33%, you need 50%. Losses and gains are not symmetric, which is the whole reason the risk percentage is set before the trade rather than after.

Consistency over conviction is the professional standard.