Trading Calculator

Shares = capital ÷ stock price, rounded down to a whole share so the purchase never costs more than you have. Total cost = shares × price. Cash left over is what remains. Commissions and fees are not included. Some brokers allow fractional shares; this calculator counts whole shares only.

Stop price = entry × (1 − stop %), or type the price directly. Loss per share = entry − stop. Estimated loss = loss per share × shares. Position value = entry × shares. A stop is not a guaranteed exit price: gaps and slippage can produce larger losses.

Total purchase amount ÷ total shares gives the weighted average. This excludes fees, sales and tax adjustments; it is not definitive tax cost basis. Use your broker records and applicable tax rules for tax reporting.

Trading gain or loss = current − starting − deposits + withdrawals. Net money added = deposits − withdrawals. Return divides the trading gain by the starting balance plus deposits. It is a simple estimate, not a time-weighted return, so the timing of deposits can change the real figure.

Win, loss and breakeven rates divide each count by total trades. Wins vs. losses compares how many trades won with how many lost; it is a count, not dollars. Total won = winning trades × average win; total lost = losing trades × average loss. Average P&L per trade = (total won − total lost) ÷ total trades; breakeven trades count as $0. Wins : Losses compares counts, not dollar amounts. A win rate alone does not show profitability: the size of wins, losses and costs also matters.

P&L = (exit − entry) × shares. Price return divides the price change by entry price. Fees, taxes, dividends and financing costs are excluded.

Risk = entry − stop; reward = target − entry. Break-even win rate = risk ÷ (risk + reward): 1 : 2 gives 33.33%, and 1 : 1 gives 50%. These are simplified estimates before costs, assuming every loss exits at the stop and every win at the target, with no breakeven trades. Real outcomes, gaps, slippage and costs change the required win rate.

CAGR = (ending ÷ beginning)^(1 ÷ years) − 1. $10,000 becoming $12,100 over two years gives 10% CAGR. Assumes no deposits or withdrawals; use a cash-flow-aware return method when money moves in or out. The simple average yearly dollar change is total change ÷ years, not compound growth. Short periods are annualized and can exaggerate apparent growth.

Loss (%) = (beginning − ending) ÷ beginning. Gain needed = (beginning − ending) ÷ ending. The dollars to win back equal the dollars lost, but they have to be earned on a smaller amount, so the percentage is higher. Quick guide: a 10% loss needs an 11.1% gain; 20% needs 25%; 30% needs 42.9%; 50% needs 100%; 75% needs 300%. A 100% loss cannot be recovered.

Required margin = position value ÷ leverage. Margin rate = 100 ÷ leverage. For example, a $30,000 position at 30:1 requires $1,000 in margin (3.33%). Available margin after trade = available margin before trade − required margin; a negative result means a shortfall.

This is a fixed-rate estimate for products such as forex or CFDs. It does not calculate tiered margin, stock buying power, futures or options requirements, maintenance margin, or a liquidation price. Broker and instrument rules can differ. Margin is collateral, not your maximum loss; fees, financing and exchange-rate changes are excluded.

Learn about margin and leverage at OANDA ↗

Converted amount = entered amount × exchange rate. The rate shows how much of the destination currency equals 1 unit of the source currency. Swap changes the direction and keeps your entered amount.

Rates are daily reference rates, not live market quotes or guaranteed transaction prices. Weekends and holidays may use the last available business-day rate. Fees and bank or broker spreads are excluded. Results are rounded to the destination currency’s usual decimal places; calculations use the full returned rate.

Rates supplied by Frankfurter ↗. Only the selected currency pair is sent to the rate service; your entered amount stays in your browser. Use Convert / Refresh Rate to request a fresh rate.