ToolNestFree Stock Profit Calculator
Last updated: October 18, 2026
Quick answer: The gain on the screen isn't the gain in your pocket — commissions, fees, and dividends all move the real number. This free stock profit calculator computes your net profit, return on investment (ROI %), and breakeven price per share from the buy price, sell price, number of shares, broker commissions, and any dividends received. It answers the two questions that matter before you sell: 'what do I actually take home?' and 'at what price do I break even?' Private, instant, no signup.
✓ Free forever · ✓ No signup · ✓ Tool inputs stay in your browser — never sent to our servers.
How to Use the Stock Profit Calculator
- Enter the price per share you bought at, the price you sold (or plan to sell) at, and the number of shares.
- Add your broker commissions for the buy and the sell — flat fees and per-trade charges both count.
- Add any dividends received while holding, if you want total return rather than price gain alone.
- Click 'Calculate profit' — net profit, ROI %, and your breakeven price per share appear instantly.
Why Use Our Stock Profit Calculator?
- True net profit — buy and sell commissions subtracted, so you see what you actually take home.
- ROI % — profit as a percentage of everything you put in, the number that lets you compare trades.
- Breakeven price — the exact per-share price where the trade turns from red to green.
- Dividend-aware — optional dividend input folds payouts into the total return.
- Private by design — trade sizes are nobody's business; everything computes in your browser.
Common Use Cases
- Deciding whether to sell: Enter your actual buy price and a candidate sell price to see the true take-home before you place the order.
- Comparing brokers' fee drag: Run the same trade with $0 vs $6.95 commissions to see what your broker really costs you per year.
- Journaling trades: Log the net profit and ROI per trade instead of the raw price move — your journal finally matches your account.
- Setting limit orders: Compute the breakeven price first, then set your limit a sensible distance above it instead of guessing.
- Teaching investing math: A concrete worked example — 100 shares, $50 to $70 — makes profit, ROI, and breakeven click for beginners.
Stock Profit Calculator vs Alternatives
- Your broker's P&L screen: The most accurate record of realized gains — it's your actual account. The tradeoff: it's locked inside the broker's app and rarely shows what-if scenarios. Ours answers 'what if I sell at $75?' in seconds.
- Calculator.net / OmniCalculator: Established, thorough, and free — but heavy pages with ads around a simple calculation. This page is one clean form with breakeven and dividend handling in the same view.
- A spreadsheet: Maximum flexibility for multi-lot portfolios and tax scenarios. Overkill for 'did this trade make money' — you'll spend longer building the sheet than the trade took to think about.
- Brokerage research tools: Great for screening stocks, poor for trade math — they're built to sell you the next trade, not to audit the last one.
Bottom line: your broker owns the official record of what happened. For the question you're actually asking — 'what do I take home if I sell here, and where do I break even?' — a focused calculator beats digging through the broker's menus.
Frequently Asked Questions
How do you calculate stock profit?
Profit = (sell price − buy price) × shares − buy commission − sell commission + dividends. ROI = net profit ÷ total cost × 100. Example: 100 shares bought at $50 and sold at $70 with $10 total commissions → ($70 − $50) × 100 − $10 = $1,990 profit, a 39.7% return on the $5,010 invested.
What is the breakeven price?
The per-share sale price at which the trade makes exactly $0: (buy price × shares + buy commission + sell commission − dividends) ÷ shares. Anything above it is profit. Knowing it before you set a limit order is the difference between a planned exit and a hopeful one.
Should I include dividends in the calculation?
If you want your total return, yes — a stock that paid $200 in dividends and gained $1,000 in price returned $1,200, not $1,000. The calculator adds them separately so you can see the price gain and the total side by side. Reinvested (DRIP) dividends complicate the cost basis; treat this as an estimate there.
How do broker fees change the math?
Flat commissions hit small trades hardest: $10 in round-trip fees on a $500 trade is a 2% headwind before the stock moves. Zero-commission brokers removed this for most US retail trades, but options contracts, foreign stocks, and some platforms still charge — enter whatever your broker takes.
What about taxes on the profit?
Not included — and deliberately so. Short-term vs long-term capital gains rates, your bracket, and your country all change the answer. Treat the net profit here as pre-tax; your accountant (or your broker's tax documents) handles the rest.
Can I model multiple buys at different prices?
Not in one run — this calculator models a single lot. For multiple purchases, use your average cost per share as the buy price (total spent ÷ total shares). FIFO/LIFO lot accounting for taxes is a separate question your broker tracks.
Is ROI the same as annualized return?
No. ROI is the total return over the whole holding period — 40% over 4 years is 40% ROI but roughly 8.8% annualized. For comparing trades held different lengths, convert with the CAGR formula: (1 + ROI)^(1/years) − 1.