How do I calculate stock profit?

Stock profit = (Sell Price - Buy Price) x Number of Shares - Total Fees. For example, buying 100 shares at $50 and selling at $65 with $10 total fees: ($65 - $50) x 100 - $10 = $1,490 profit.

Does this calculator include broker fees?

Yes. Enter buy commission and sell commission separately. The calculator subtracts both from your profit. Many brokers offer zero-commission trades now, but you can account for SEC fees, FINRA fees, or exchange fees if applicable.

What about taxes on stock profit?

This calculator shows pre-tax profit. In the US, short-term gains (held under 1 year) are taxed as ordinary income (10-37%). Long-term gains (held over 1 year) are taxed at 0%, 15%, or 20% depending on income. Consult a tax professional for your specific situation.

How is ROI calculated?

ROI = (Net Profit / Total Cost) x 100. Total cost includes the purchase price of all shares plus buy-side commission. A $500 profit on a $5,000 investment is a 10% ROI.

Can I calculate losses too?

Yes. If the sell price is lower than the buy price, the calculator shows your loss in red with a negative percentage. Useful for tax-loss harvesting decisions or evaluating whether to sell at a loss.

Does it account for dividends?

No. This calculator focuses on buy/sell profit from price appreciation. Dividends are separate income. For dividend calculations, use the Dividend Calculator tool.

Stock Profit Calculator — Free Online, Calculate Gains Instantly

Last updated: April 20267 min readCalculator Tools

Enter your buy price, sell price, number of shares, and any fees. Get your profit (or loss) instantly. The calculator shows net profit in dollars, percentage return, total cost, and total revenue with a detailed breakdown.

Calculate Your Stock Profit

Open the Stock Profit Calculator
Enter your buy price per share
Enter your sell price per share
Enter the number of shares
Add any commissions (buy and sell separately)
Results update in real time

Calculate stock profit or loss. Free, instant, private.

Calculate Now →

The Stock Profit Formula

It is straightforward math:

Net Profit = (Sell Price × Shares) - (Buy Price × Shares) - Buy Commission - Sell Commission

Or simplified:

Net Profit = (Sell Price - Buy Price) × Shares - Total Fees

Example Calculations

Scenario	Buy	Sell	Shares	Fees	Profit	ROI
Small gain	$25.00	$28.50	100	$0	$350.00	+14.0%
Big winner	$150.00	$220.00	50	$0	$3,500.00	+46.7%
With fees	$45.00	$52.00	200	$9.95 each	$1,380.10	+15.3%
Break even	$100.00	$100.50	100	$50 total	$0.00	0.0%
Loss	$85.00	$72.00	75	$0	-$975.00	-15.3%
Penny stock	$0.50	$0.85	10,000	$0	$3,500.00	+70.0%

What the Calculator Shows You

Net Profit/Loss: The dollar amount you gained or lost, shown in green (profit) or red (loss)
ROI Percentage: Your return on invested capital, including fees
Total Cost: Buy price × shares + buy commission
Total Revenue: Sell price × shares - sell commission
Fee Breakdown: Buy and sell commissions listed separately

When You Need This Calculator

Before Selling

Thinking about selling a position? Enter your buy price (check your broker app for cost basis) and the current market price. See if the profit justifies selling or if you should hold for a better price.

After Selling

Need to know your exact gain for tax records? Enter the actual buy and sell prices plus any fees. The calculator gives you the precise profit number you need for Schedule D.

Evaluating a Trade Idea

Considering a stock at $45 with a price target of $60? Enter hypothetical numbers to see if the potential profit is worth the risk. Try different share quantities to find the right position size.

Comparing Trades

Which trade was better: 50 shares of Stock A at $100→$130 or 200 shares of Stock B at $25→$31? Run both through the calculator. Stock A: $1,500 (30% ROI). Stock B: $1,200 (24% ROI). Same capital, different returns.

Zero-Commission Brokers

Robinhood, Webull, Fidelity, Schwab, and most major brokers now offer $0 commission on stock trades. But fees still exist:

SEC fee: ~$0.0278 per $1,000 of sale proceeds (seller only)
FINRA TAF: $0.000166 per share sold (max $8.30)
Exchange fees: Vary by exchange and order type

These are tiny on most trades but add up on large positions. Enter them in the commission fields for exact numbers.

What This Calculator Does NOT Include

Taxes: Profit shown is pre-tax. See our capital gains tax guide for tax rates.
Dividends: Dividend income is separate from buy/sell profit.
Multiple trades: This handles one buy/sell pair. For portfolio-level tracking, use your broker's built-in tools.

Related: Compound Interest Calculator for growth projections, Percentage Calculator for quick math.