Free Tools
Prop Firm Calculators
Four calculators for prop trading challenges: size your position, know your dollar risk, estimate the trades a target should take, and run a Monte Carlo simulation of your real pass probability and cost.
Challenge Setup
Risk is sized as a fixed percent of your starting balance, tested across ten risk levels. Each simulated trade represents one trading day, a simplification most challenge calculators use.
At the optimal risk level0.5% per trade
Pass Rate
99.9%
Avg Trades to Fund
33
Attempts Needed
1
90% confidence
Expected Cost
$500
Pass Rate by Risk Level
Expected Cost to Fund
Break-Even Analysis
Budgeting for 1 attempts at 0.5% risk costs about $500 in fees. At a 80% profit split on a $100,000 account, you would need to make $625 in trader profit, a 0.63% return on the account, just to recover those costs.
Results Comparison
| Risk / Trade | Pass Rate | Avg Trades | Attempts (90%) | Total Trades | Expected Cost | 90% Budget | Drawdown Breach | 5+ Fail Risk |
|---|---|---|---|---|---|---|---|---|
| 0.5% OPTIMAL | 99.9% | 33 | 1 | 33 | $500 | $500 | 0.1% | 0.0% |
| 1% | 99.3% | 17 | 1 | 17 | $504 | $500 | 0.7% | 0.0% |
| 1.5% | 96.3% | 12 | 1 | 12 | $519 | $500 | 3.7% | 0.0% |
| 2% | 92.7% | 8 | 1 | 8 | $539 | $500 | 7.3% | 0.0% |
| 2.5% | 86.7% | 7 | 2 | 14 | $577 | $1.0K | 13.3% | 0.0% |
| 3% | 87.2% | 5 | 2 | 10 | $573 | $1.0K | 12.8% | 0.0% |
| 3.5% | 79.8% | 5 | 2 | 9 | $626 | $1.0K | 20.2% | 0.2% |
| 4% | 81.7% | 4 | 2 | 8 | $612 | $1.0K | 18.3% | 0.1% |
| 4.5% | 82.4% | 4 | 2 | 8 | $607 | $1.0K | 17.6% | 0.1% |
| 5% | 44.0% | 3 | 4 | 13 | $1.1K | $2.0K | 56.0% | 9.9% |
Simulated with 3,000 Monte Carlo trials per risk level. Results are a statistical estimate, not a guarantee of any individual outcome.