Free Trading Tools

Options Trading Tools

Professional tools for options analysis, strategy planning, and risk management. Free and open source.

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Options Calculator

Run the numbers on one option in seconds: break-even, max profit and loss, payoff chart and a Black-Scholes scenario. Plus a warrant mode for premium, omega and fair value.

  • Call & put, long & short
  • Multiplier 100, 10, 5 or 1
  • P/L before expiry
  • Warrant check
  • Shareable links
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Payoff Calculator

Build multi-leg options strategies and visualize profit/loss at expiration. Up to 6 legs with presets like Covered Call, Iron Condor and more.

  • Multi-leg strategies (up to 6)
  • Break-even points
  • Max profit/loss
  • CSV export
  • URL sharing
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P/L Simulator

Calculate current profit/loss before expiration using Black-Scholes pricing. Shows all Greeks: Delta, Gamma, Theta, Vega, Rho.

  • Real-time P/L
  • All Greeks
  • P/L curve
  • Volatility sensitivity
  • Time decay
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Trade Optimizer

Compare modeled option strategies for a market outlook, target price, and expiration, with transparent payoff and risk metrics.

  • Five market outlooks
  • Target-price scenarios
  • Maximum risk & break-even
  • Payoff and distribution chart
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IV Tools

Calculate implied volatility from market prices or theoretical prices from IV. Uses Newton-Raphson with bisection fallback.

  • IV solver
  • Price calculator
  • Call/Put support
  • Dividend support
  • Accuracy 0.01%
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Probability Calculator

Estimate model-based odds above or below a target price using IV, time to expiration, and a visual price distribution.

  • Above / below target
  • IV and time to expiration
  • Modeled 1σ range
  • Distribution chart
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Probability Lab

Infer a market distribution from option prices, adjust your own view, and compare strategies under both distributions.

  • Market PD from option prices
  • Edit Your PD interactively
  • Compare market and personal views
  • Rank strategies by modeled outcomes
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Wheel Tracker

Log cash-secured puts, covered calls, rolls and assignments. See premium per week, adjusted cost basis and return for every cycle.

  • Premium per week, month, year
  • Adjusted basis & breakeven
  • Realized P/L per cycle
  • Repair strike for covered calls
  • Data stays in your browser
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Earnings Calendar

Quarterly earnings dates with strategy suggestions, IV crush data, expected move, and historical earnings reactions for 40+ stocks.

  • Expected Move
  • IV Crush Analysis
  • Historical Moves
  • Straddle & Iron Condor
  • 40+ Stocks
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Options Monitor

Load real option chains and compare expiration, bid, ask, IV, modeled Delta, volume, and open interest by strike.

  • Calls and puts aligned by strike
  • Filters and sorting
  • Quote and model values labeled
  • Contract details and analysis tools
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Stock Monitor

Monitor multiple stocks and ETFs in watchlists. Compare price moves, 30-day implied volatility, HV20, and options activity.

  • Multiple local watchlists
  • 30-day IV and HV20
  • Options, call, and put volume
  • Sorting, filters, and analysis links
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Why Our Tools?

Built with mathematical precision and practical experience

Accurate

Black-Scholes model with 85%+ test coverage

Fast

Optimized calculations with React memoization

Open Source

Full code available

Data Safe

No servers - everything runs locally

Important Notice

These tools are for educational purposes only and do not constitute investment advice. Options trading involves substantial risk and is not suitable for every investor. Past results are no guarantee of future returns. Please consult a licensed financial advisor before making trading decisions.

Ready to Get Started?

Choose a tool and start analyzing your options strategies

Payoff CalculatorTutorials