Free Day Trading Calculators

Enter your account size, risk %, and stop loss — get the exact number of shares or contracts to buy. Works for stocks, crypto, forex, and futures.

Plug in your entry, stop loss, and target. Instantly see if the R:R makes the trade worth taking.

Set your risk per trade using support levels or fixed percentages. Stop blowing accounts.

The mathematically optimal bet size based on your win rate and average payoff. Used by hedge funds and professional gamblers.

See exactly how many losing trades it takes to hit a specific drawdown at your risk level. Know your worst case before it happens.

Track your day trades in the rolling 5-business-day window. See how many trades you have left before triggering the Pattern Day Trader rule.

Monte Carlo simulation with 1,000+ scenarios. See the realistic distribution of outcomes based on your actual win rate and risk parameters.

Calculate the real compound annual growth rate of any investment. Cuts through the noise of raw returns.

Calculate margin requirements, buying power, and the exact price where you get margin called.

Estimate federal and state taxes on your day trading gains. See NIIT impact, capital loss carryover, and your effective tax rate before filing.

Find out if your trading strategy has a real edge. Enter your win rate and average win/loss to see expected profit per trade.

Add multiple purchase lots and instantly see your weighted average cost, break-even price, and profit/loss at any target.

Build any multi-leg options strategy and see the full P&L chart at expiration. Calls, puts, spreads — all visualized.

Model the cash-secured put + covered call wheel. See premium income, annualized return, break-even, and assignment scenarios.

Calculate max profit, max loss, and breakeven for a long call position. See the full P&L chart at expiration.

Calculate max profit, max loss, and breakeven for a long put position. Visualize downside profit potential at expiration.

Model a bull call spread with two strikes. See net debit, max profit, max loss, and the P&L payoff diagram.

Model a bear put spread with two strikes. See net debit, max profit, max loss, and the full payoff diagram.

Model a four-leg iron condor with custom strikes. See net credit, max profit, max loss, and profit zone width.

Own shares and sell calls against them. See premium income, adjusted cost basis, breakeven, and return on capital.

Sell puts with cash collateral. See premium income, cash required, breakeven price, and return on capital.

Buy a call and put at the same strike. See how much the stock needs to move to profit, with a full P&L chart.

Get the exact dollar value of a pip for any forex pair in your account currency. Majors, minors, and exotics.

Enter your risk % and stop loss distance — get the correct lot size. No more over-leveraging forex trades.