Stock Profit Calculator
Work out the gross and net profit or loss on a share purchase, with the buy and sell commissions included in every figure. Add up to 10 lots to average a position and see the weighted average cost, the break-even sell price and what the fees cost you.
Your position
Display symbol only — no currency conversion is applied.
Profit vs sell price
Net profit after buy and sell commissions, sampled from break-even −50% to +50%.
Results
The price must rise 0.50% from the average cost of $100.50 to $101.00 to break even after fees.
| Total shares | 10 |
|---|---|
| Gross cost of shares | $1,000.00 |
| Buy commissions | $5.00 |
| Total cost basis (incl. buy commissions) | $1,005.00 |
| Average cost per share (incl. buy commissions) | $100.50 |
| Gross proceeds at sell price | $1,200.00 |
| Net proceeds (after sell commission) | $1,195.00 |
| Gross profit / loss | $200.00 |
| Net profit / loss | $190.00 |
| Return on cost basis (net) | +18.91% |
| Gross return before fees | +20.00% |
| Break-even sell price per share | $101.00 |
| Total fees paid (buy + sell) | $10.00 |
| Fees as % of sell proceeds | +0.83% |
| Return lost to fees | 1.09 percentage points |
| Rise needed from average cost to break even | +0.50% |
Sell price scenarios
| Scenario | Sell price | Gross P/L | Net P/L | Return |
|---|---|---|---|---|
| −25% | $90.00 | -$100.00 | -$110.00 | -10.95% |
| Break-even | $101.00 | $10.00 | $0.00 | 0.00% |
| −10% | $108.00 | $80.00 | $70.00 | +6.97% |
| Current sell price | $120.00 | $200.00 | $190.00 | +18.91% |
| +10% | $132.00 | $320.00 | $310.00 | +30.85% |
| +25% | $150.00 | $500.00 | $490.00 | +48.76% |
About this tool
The Stock Profit Calculator works out gross and net profit or loss on one or more share purchases, including the buy and sell commissions, the weighted average cost per share, the break-even sell price and the drag that fees put on your return. Every figure is computed entirely in your browser — nothing you type is uploaded, stored or shared. The currency selector only changes the symbol shown beside the numbers: it is a label, and no foreign-exchange conversion is applied.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Stock Profit Calculator really free?
Yes. Stock Profit Calculator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Stock Profit Calculator upload my data?
No. Stock Profit Calculator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Stock Profit Calculator is ready to use on desktop or mobile.
Does Stock Profit Calculator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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