Stock Profit Calculator: See Your Gains & Losses Instantly

Stock Profit Calculator: See Your Gains & Losses Instantly

This share profit calculator lets you find out exactly how much money you made (or lost) on a stock trade in seconds. Just enter the number of shares, your buy price, your sell price, and any commissions you paid. You will see your total profit or loss, your return on investment (ROI), and how much you earned per share. No spreadsheets needed. No complicated math. Just fast, clear answers so you can make better decisions with your money.

Share Profit Calculator

Your Results
Total Cost
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Total Revenue
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Profit / Loss
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Return on Investment (ROI)
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Per Share Profit / Loss
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How to Use This Calculator

Using this share profit calculator takes less than a minute. Here is all you do:

  1. Enter your trade details. Type in the number of shares you bought, your buy price, and your sell price. If your broker charged you a commission, add that too. If not, leave the commission fields at 0.
  2. Click “Calculate Profit / Loss.” The calculator will instantly show you your total cost, total revenue, profit or loss in dollars, ROI percentage, and profit per share.
  3. Read your results. Green numbers mean you made money. Red numbers mean you lost money. Use the ROI number to compare this trade to other investments.

How Stock Profit Is Calculated

Stock profit is the difference between what you spent to buy shares and what you received when you sold them. It sounds simple, but commissions matter. Here are the formulas this calculator uses:

Total Cost = (Buy Price × Shares) + Buy Commission
Total Revenue = (Sell Price × Shares) − Sell Commission
Profit / Loss = Total Revenue − Total Cost
ROI (%) = (Profit / Loss ÷ Total Cost) × 100
Per Share Profit = Profit / Loss ÷ Number of Shares

For example, if you bought 100 shares at $45.00 with a $4.99 commission, your total cost is $4,504.99. If you sold those shares at $58.00 with a $4.99 commission, your total revenue is $5,795.01. That gives you a profit of $1,290.02, an ROI of about 28.6%, and a per-share profit of $12.90.

What Is a Good ROI on a Stock Trade?

ROI (Return on Investment) tells you how much you earned compared to what you put in. There is no single “right” answer, but here is a simple way to think about it:

  • 7 to 10% per year is roughly what the stock market returns on average over a long time. If your trade beats that, you did well.
  • Higher is not always better. A 50% ROI sounds great, but if you only held the stock for one week, compare it to the risk you took.
  • Negative ROI is a loss. That is okay. Every investor loses sometimes. What matters is your average ROI over many trades.
  • Compare after commissions. This calculator already accounts for commissions, so your ROI number is your real-world return, not just a paper number.

If you want to build wealth over time without worrying about picking the right moment to buy and sell, check out the dollar-cost averaging strategy below. It is one of the most beginner-friendly approaches to investing.

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Frequently Asked Questions

A share profit calculator is a tool that figures out how much money you made or lost on a stock trade. You enter your buy price, sell price, number of shares, and any broker commissions. The calculator does the math and shows your profit or loss in dollars, your ROI percentage, and how much you earned per share.
Yes. You can enter a buy commission and a sell commission. The calculator adds the buy commission to your total cost and subtracts the sell commission from your total revenue. This gives you an accurate profit number that reflects what you actually paid in fees. If your broker charges zero commission (like many do today), just leave those fields at 0.
ROI stands for Return on Investment. The formula is: ROI = (Profit or Loss divided by Total Cost) times 100. For example, if you invested $1,000 and made $150, your ROI is 15%. This number tells you what percentage of your original investment you gained (or lost). It is useful for comparing different trades or investments.
No. This calculator shows your pre-tax profit. In most countries, stock gains are subject to capital gains tax. Short-term gains (held less than a year) are often taxed at a higher rate than long-term gains. For exact tax calculations, talk to a tax professional or use your country’s official tax tools.
Yes, the math works the same way for any asset you buy and sell, including crypto, ETFs, or even real estate. Just enter your buy price, sell price, and number of units (shares, coins, or whatever applies). The profit, loss, and ROI calculations will be accurate as long as your inputs are correct.

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