- Calculators
- Trading & Risk Management
🎯 Trading & Risk Management calculators
Position size, stops, risk-reward, expectancy, Kelly and the maths of surviving losing streaks.
- Position Size Calculator for StocksHow many shares to buy for a set risk per trade, or within a capital limit per position.
- Risk-Reward Ratio, Take-Profit & Break-Even Win Rate CalculatorRisk-reward ratio of a trade, take-profit levels by R multiple and the win rate needed to break even.
- Stop-Loss CalculatorStop-loss price from a percentage, a dollar risk or an ATR multiple, with the loss if it is hit.
- Trailing Stop CalculatorFollow a percentage or dollar trailing stop through a price series and see where the trade exits.
- Leverage & Margin Requirement CalculatorEffective leverage, margin requirements, buying power and the margin call price for a stock account.
- Trading Cost CalculatorCommission, spread, slippage and SEC/FINRA fees per round trip, and how much of your edge they eat.
- Trading Expectancy, Win Rate & Profit Factor CalculatorExpectancy, profit factor, payoff ratio and break-even win rate from your stats or a pasted list of trades.
- Risk of Ruin & Losing Streak CalculatorOdds of losing streaks, the drawdown they cause and the risk of ruin for your win rate and position size.
- Kelly Criterion & Fractional Kelly CalculatorKelly fraction and leverage, half and quarter Kelly, and the growth rate at every bet size.
- Trading Journal Statistics CalculatorPaste your trades for win rate, expectancy, profit factor, drawdown, streaks, monthly P&L and stats by symbol.
About these calculators
Most trading accounts fail on position size, not on analysis. This group covers the arithmetic that keeps an account alive: how many shares to buy for a given risk, where the stop goes, how much a trade must win to justify its risk, and what a run of losses does to equity.
The expectancy, Kelly and risk-of-ruin calculators turn a trading record into hard numbers, and the journal statistics tool reads your own trade list.
More calculator groups
All calculators →- Stock Market & Equity
Profit, return, CAGR, volatility, beta and drawdowns for the stocks you hold or plan to buy.
13 calculators - Stock Valuation & Fundamentals
P/E, PEG, DCF, the Graham Number and the ratios analysts use to judge what a share is worth.
14 calculators - Dividends & Income
Yield, income, payout safety, reinvestment and the snowball toward living on dividends.
8 calculators - Forex Trading
Pip value, lot size, margin, swaps and session times for currency traders.
9 calculators - Portfolio Management & Performance
Sharpe, Sortino, drawdown, correlation, rebalancing and portfolio optimization.
16 calculators - Options, Futures & Derivatives
Black-Scholes, Greeks, implied volatility and payoff diagrams for common option strategies.
11 calculators - Crypto & Digital Assets
Profit, DCA, liquidation price, funding, staking, mining and impermanent loss.
9 calculators - Bonds & Fixed Income
Yield to maturity, bond prices, duration, convexity, T-bills and bond ladders.
9 calculators - Savings & Compound Interest
Compound interest, APY, savings goals, CDs and how long money lasts.
8 calculators - Budgeting, Salary & Household
Budgets, net worth, debt-to-income, take-home pay and hourly rates.
10 calculators - Loans, Mortgages & Debt
Mortgage and loan payments, amortization, refinancing and debt payoff plans.
16 calculators - Real Estate Investing
Rental cash flow, cap rate, rental yield, IRR, rent vs buy and flipping.
11 calculators - Retirement & FIRE
Retirement savings, withdrawals, FIRE numbers, 401(k), IRA and Monte Carlo odds.
12 calculators - Business Profitability & Operations
Margins, break-even, EBITDA, pricing, working capital and runway.
12 calculators - Corporate Finance & Capital Investment
NPV, IRR, WACC, CAPM, terminal value, startup valuation and dilution.
16 calculators - SaaS, E-commerce & Marketing
CAC, LTV, churn, MRR, ROAS and the unit economics of online businesses.
12 calculators - Taxes, Inflation & Currency
Capital gains, income and sales tax, inflation, real returns and currency conversion.
13 calculators - Quant & Algorithmic Trading
Monte Carlo, deflated Sharpe, overfitting, walk-forward, capacity and execution costs.
10 calculators - Advanced Risk & Institutional
VaR attribution, hedging, market-neutral books, pairs trading and factor exposure.
9 calculators