--- title: Free Risk:Reward Calculator & Simulator | ohYaaa description: Free risk:reward calculator for traders. Run Monte Carlo simulations to see how your R:R ratio, win rate, and trade frequency impact your annual P&L. No signup required. url: https://www.ohyaatradingjournal.com/tools/rr-calculator type: page last_updated: '2026-10-14' --- # Risk:Reward Calculator See how a proper risk:reward profile changes your results over time. Powered by Monte Carlo simulation — 500 randomized scenarios of a full trading year. ![R:R Calculator with Monte Carlo simulation](/screenshots/rr-calc.png) ## Try the Full Interactive Calculator Adjust your R:R ratio, win rate, risk per trade, and trade frequency. Watch 500 simulated equity curves update in real time. [Open Calculator — Free](/app) No credit card required. Available in the Tools section after signup. ![Setup and mistake comparison against your profile](/screenshots/rr-calc-compare.png) Connects to your real data: shows which setups already fit your target profile and which mistakes are holding you back. ## What This Calculator Shows You ### Equity Curve Simulation 500 randomized paths showing every possible outcome for your year. See the median result, best 10%, worst 10%, and everything in between. ### P&L Distribution Histogram showing how final outcomes are distributed. Instantly see the probability of hitting your profit target vs. having a losing year. ### Key Statistics Expected annual P&L, probability of profit, average max drawdown, win/lose streaks, and expected value per trade. ### Why It Matters Most traders focus on win rate alone. This calculator proves that a 40% win rate with 3:1 R:R crushes a 70% win rate with 1:1 R:R over time. ## How to Use It 1. **Set your R:R ratio** — How much you make on a win vs. how much you lose on a loss (e.g., 3:1 means you win $300 when right, lose $100 when wrong) 2. **Enter your win rate** — What percentage of your trades are winners 3. **Set your risk per trade** — The dollar amount you risk on each trade 4. **Choose your frequency** — How many trades you take per week 5. **Run the simulation** — See 500 possible outcomes for your year ## Ready to track your real R:R? [Create Your Journal — Free](/app) Free forever. No credit card required.