What is the Percentage Gain/Loss Calculator?
The Percentage Gain/Loss Calculator is a free online tool that helps you % change and break-even recovery % It runs entirely in your browser, gives an instant result, and needs no sign-up, download or spreadsheet.
Profit is exit minus entry times size, minus fees; expressing it as a percentage and annualising it lets you compare very different trades on equal footing.
Whether you trade stocks, forex, options, crypto or futures, the percentage gain/loss is the same calculation — so this tool works for any market. Use it before you place a trade to base your decision on real numbers instead of a guess.
How to use the Percentage Gain/Loss Calculator
Using the percentage gain/loss calculator takes only a few seconds:
- Enter your figures in the percentage gain/loss calculator above — the fields are filled with an example you can replace.
- Read the highlighted result; it updates instantly as you type.
- Add your broker’s fees or commissions where relevant for a true net figure.
- Change any input to compare scenarios before you commit to the trade.
Percentage Gain/Loss formula & example
The percentage gain/loss formula is: % change = ((new price − old price) ÷ old price) × 100.
Invest $5,000.00, end with $6,250.00. ROI = ($6,250.00 − $5,000.00) ÷ $5,000.00 = 25.0%.
When to use the Percentage Gain/Loss Calculator
Reach for the percentage gain/loss calculator whenever you’re planning a trade and need to know your percentage gain/loss in advance. Running the number first keeps your decisions consistent and stops a single trade from doing outsized damage to your account. Traders who make this a habit — checking before every entry — are the ones who protect their capital over the long run.
Why use a percentage gain/loss calculator?
Doing percentage gain/loss by hand is slow and error-prone — a misplaced decimal or a forgotten fee can turn a winning plan into a losing one. The percentage gain/loss calculator removes that risk: it applies the correct formula every time, updates the moment you change an input, and lets you test several scenarios in seconds.
That speed matters in live markets. When a setup appears you can size it, check the reward against the risk, and act before the opportunity passes — without second-guessing your arithmetic.
- Instant, accurate percentage gain/loss with no spreadsheet
- Free, with no account, login or download
- Works on mobile and desktop, right in your browser
- Useful for stocks, forex, options, crypto and futures
Tips for accurate percentage gain/loss
- Use your real entry, exit and size — not round-number guesses.
- Include fees and spread; small costs add up across many trades.
- Recalculate whenever your price, size or stop changes.
- Round against yourself to leave a margin for slippage.