Simulate the path.
Before risking capital.
Model hundreds of possible trading sequences with Fixed Risk or Kelly sizing, then use focused calculators to refine the inputs behind the plan.
Choose how risk scales.
Both simulators show every bot path, highlight P90, median and P10 outcomes, and report growth, drawdown, target timing and portfolio ruin.
Fixed Risk Monte Carlo
Test a consistent cash or percentage risk model, including step-up turnover cycles as the portfolio grows.
Kelly Monte Carlo
Calculate Full Kelly from the trading edge, scale it to a safer fraction and enforce a maximum risk cap.
Refine the numbers behind the simulation.
Use the calculators for position sizing, prop-firm limits, system expectancy and drawdown recovery. These tools support the simulation workflow without replacing it.
Position Size Calculator
Calculate a trade size from the amount you are prepared to lose.
How to use it
- Choose your account currency and enter your balance.
- Type or select a symbol, then enter entry, stop and target prices.
- Confirm the preset contract size against your broker before using the suggested lot size.
Why it matters
Position sizing converts a price-based stop into a consistent cash risk. It helps prevent a volatile instrument or a wider stop from quietly risking more of your account than intended.
One decision per calculator.
Open the calculator that matches the number you need to verify. Each result includes its underlying assumption.
The math stays visible.
Risk tools are only useful when you can understand their inputs. RiskKit shows the formula, keeps contract values editable and avoids pretending that an estimate is a promise.
Read how to interpret the simulations →Plan for losing streaks →
Every result names the simplified model behind it, so you know what the number leaves out.
Point values are editable because contract sizes, lot steps and symbol specifications vary by broker.
This version calculates in your browser. It does not ask for a broker login or store your trading data.