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About Trading P&L Percent Calculator Online
This tool calculates the percentage profit or loss between an entry price and an exit price. Enter both prices and an optional position size, and the tool returns the percent change and (if size is provided) the dollar profit or loss.
Percentage P&L is the cleanest way to compare trades of different sizes or different markets. A 5% gain is a 5% gain whether you risked $1,000 or $1,000,000 — that lets you evaluate skill independently from account size.
Use it after closing each trade to log your performance in a journal, or to verify your broker's P&L calculation. Many brokers report only dollar P&L on closed trades, but percentage is what compounds your account over time.
How to use this tool
How to compute trade P&L as a percentage
Enter entry price
"Entry price" is the price you opened the trade at. The tool does no commission, slippage, or carry modelling — net the entry by hand if you want fees baked in.
Enter exit price
"Exit price" is where you closed (or are quoting an exit). Same currency / quote as entry. Entry = 0 throws "Entry cannot be 0." — percentage isn't defined.
Press Run
Result is pnlPercent = ((exit − entry) / entry) × 100, rounded to 4 decimals. Positive = profit, negative = loss. The sign assumes a long position; for shorts, flip the sign yourself.
Position size lives elsewhere
This tool returns ONLY the percentage. To know the dollar P&L, multiply by position size; to check whether the percentage is acceptable given your stop, use risk-reward-calculator.