Stock Profit Calculator — Gains, Losses & ROI

Before you sell, know your numbers. Enter purchase and sale details to estimate profit or loss and ROI in seconds.

📈 Stock Profit / Loss

How the stock profit calculator works

Profit = (sell price − buy price) × shares − fees. ROI expresses that profit as a percentage of your original cost. The calculator deducts commissions so you see your true net result.

Taxes are not included — capital gains tax depends on your holding period and jurisdiction. Not investment advice.

Why use our stock profit calculator?

LaCalc’s stock profit calculator is free, fast, and private. No sign-up, no downloads — type your numbers and get instant results. Every calculation runs in your browser, so your data never leaves your device.

Frequently asked questions

How do I calculate stock profit?
Subtract total cost (buy price × shares + fees) from total proceeds (sell price × shares). The difference is your net profit.
What is a good ROI on stocks?
The long-run stock market average is roughly 7–10% per year after inflation. Individual results vary widely.
Do I pay tax on stock profits?
In most countries, yes — capital gains tax applies. Rates often depend on how long you held the shares.

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