Free Trading Calculators
Plan every trade with precision. These calculators run in your browser -- no sign-up required, no data leaves your device.
Updated June 2026
Position Size Calculator
Calculate the exact number of shares to buy based on your account size, risk tolerance, and stop loss distance.
Risk/Reward Calculator
Evaluate your trade setup by computing the risk-to-reward ratio, required win rate, and expected value.
Options Profit Calculator
Estimate options P/L at expiration. Enter your premium, strike, and stock price to see breakeven, max loss, and current profit.
Strategy Backtester
Test momentum, mean reversion, breakout, and SMA crossover strategies against real historical data. See equity curves, Sharpe ratios, and trade logs.
Strategy Builder
Build custom trading strategies visually. Combine indicators, set entry/exit rules, configure risk management, and backtest — no code required.
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Frequently asked questions
Are these trading calculators free?
Yes. Every calculator on this page — position size, risk/reward, options profit, the strategy backtester, and the strategy builder — is completely free with no sign-up required. The calculators run entirely in your browser, so no account or payment is needed to use them.
Do I need an account to use these tools?
No. The position size, risk/reward, and options profit calculators run client-side in your browser and require no account. Only the backtester calls a public API to fetch historical data, and it also works without signing up.
Which calculator should I use to plan a trade?
Start with the risk/reward calculator to confirm the setup has a favorable payoff, then use the position size calculator to decide how many shares to buy for your risk tolerance. For options, use the options profit calculator to find breakeven and max loss. The backtester helps you validate a full strategy against historical data before trading it.
Tradewink is not a registered investment adviser, broker-dealer, or financial planner. All data, signals, and analytics on this page are for informational purposes only and do not constitute investment advice, financial advice, or a recommendation to buy or sell any security.
Past performance does not guarantee future results. Trading involves substantial risk of loss, including the possibility of losing more than your initial investment. You are solely responsible for your own trading decisions.