Position Size Calculator
Calculate position size from account value, maximum risk and stop distance before entering a trade.
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Free trading tools
Put the risk in numbers.
Free calculators and analytics for sizing positions, measuring expectancy, understanding drawdown, reviewing trade history and testing whether the math behind a trading plan actually holds up. No signup. No email gate.
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Calculators
Start with the inputs you control: account size, risk, stop distance, win rate and payoff. The tools do the arithmetic; they do not predict the next trade.
Expectancy Calculator
Combine win rate, average winner and average loser to measure the expected value of a trading system over time.
Open calculator →Options Profit Calculator
Model a single-leg or vertical options position across underlying prices at expiration and inspect the payoff profile.
Open calculator →Available now
Risk lab
Use these tools to quantify account survival, futures exposure and available drawdown before a position is opened.
Risk of Ruin
Estimate how account risk, win probability and payoff characteristics affect the probability of reaching a defined loss threshold.
Open calculator →MNQ Risk Calculator
Convert MNQ stop distance and contract count into dollar risk, or work backward from a maximum dollar loss to position size.
Open calculator →Drawdown Buffer
Measure remaining account buffer against a drawdown threshold and see how much proposed trade risk consumes before entry.
Open calculator →Available now
Performance lab
Move beyond broker headline statistics. Analyze realized trade history, stress sequence risk across thousands of alternate paths, and test whether the edge remains distributed across time and independent subsamples — entirely in your browser.
Trade Journal Analyzer
Analyze TradingView or generic trade-history CSVs for expectancy, profit factor, realized drawdown, streaks, recency, weekday and time-of-day patterns, direction differences and deeper trade intelligence. Files stay in your browser.
Open analyzer →Strategy Monte Carlo Lab
Resample actual trade outcomes across thousands of alternate paths to estimate drawdown ranges, losing-streak distributions, breach probability and terminal outcome percentiles. Files and simulations stay in your browser.
Open Monte Carlo Lab →Strategy Robustness Lab
Test whether a trading edge survives across years, rolling windows, direction, weekdays and randomized historical subsamples. Includes a transparent robustness score focused on consistency rather than headline profit.
Open Robustness Lab →The principle
Tools for decisions, not predictions.
A calculator cannot tell you where the market goes next. It can tell you exactly what happens to your account if your assumption is wrong.
That distinction matters. Rawstocks tools are designed around measurable inputs and transparent arithmetic so the output can be checked rather than trusted blindly.
Risk disclosure
Trading futures and options involves substantial risk of loss and is not suitable for every trader or investor. Calculator outputs are estimates based solely on the inputs and assumptions provided and do not account for slippage, commissions, liquidity, execution quality, changing margin requirements or other market conditions unless explicitly stated.
Rawstocks LLC is a trading education and analysis community. We are not a registered investment adviser or broker-dealer, and nothing published here constitutes personalized investment advice. Past performance does not indicate future results. Read the full disclosure.