Prop Firm Tools
Challenge Calculator
Input your trading stats to see your true probability of passing a prop firm challenge, along with recommended position sizing.
Challenge Rules
$
Your Trading Stats
Estimated Pass Probability
--%
Calculating based on Monte Carlo simulation...
Target to Pass
$--
Min Daily Profit
$--
Daily Loss Limit
$--
Total Loss Limit
$--
Recommended Position Size
Risk $-- per trade (--%) to survive normal losing streaks without hitting your daily drawdown limit.
Estimated days to target: --
Track your challenge automatically with Toastlytics
Sign Up →Frequently Asked Questions
Focus on risk management rather than huge returns. Using a max risk of 0.5% to 1% per trade ensures you don't hit the daily drawdown limits. Our calculator shows exactly how many trades you need to hit the profit target based on your win rate.
Most professional prop traders risk between 0.25% and 0.5% per trade. This gives you enough runway to survive a losing streak without violating the 5% daily or 10% total drawdown rules typical of firms like FTMO or Topstep.
Your win rate and risk-reward ratio determine your expected value. Even with a 40% win rate, a 1:2 risk-reward ratio will yield a positive expectancy, giving you a high mathematical probability of passing the challenge given enough trades.