Stock profit calculator

Work out a trade’s gain or loss after transaction fees.

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Stock profit calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Shares sold

Purchase price per share

More inputs and assumptions

Sale price per share

Total purchase and sale fees

Answer

…

Net profit = shares × (sale price − purchase price) − combined transaction fees.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

Saved scenario

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Formula and assumptions

Uses one purchase price and currency. Dividends, splits, foreign exchange and taxes are excluded. This does not choose a tax-lot accounting method.

Automatic precision shows money to two decimal places and other numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using Stock profit calculator

Net profit = shares × (sale price − purchase price) − combined transaction fees.

Uses one purchase price and currency. Dividends, splits, foreign exchange and taxes are excluded. This does not choose a tax-lot accounting method.

Next: Stock average calculator

A worked example

With shares sold = 10, purchase price per share = 20, sale price per share = 25, total purchase and sale fees = 5, the net profit or loss is 45.00 (rounded to two decimal places).

Next: Calculate ROI

Before you use the result

Uses one purchase price and currency. Dividends, splits, foreign exchange and taxes are excluded. This does not choose a tax-lot accounting method. Calculations keep full browser-number precision. Money amounts are displayed to two decimal places; other results use up to 12 significant digits. Very large values may lose precision.

Example results for shares sold

These examples use Purchase price per share: 20; Sale price per share: 25; Total purchase and sale fees: 5. They are reference calculations, not recommended settings.

Shares sold	Net profit or loss
5	20.00
10	45.00
20	95.00

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