Stock Profit Calculator
Calculate the exact net profit, loss, and Return on Investment (ROI) of your stock trades. Instantly determine your true break-even price by factoring in broker commissions.
Quick Answer: How to calculate stock ROI?
Return on Investment (ROI) on a stock is calculated by taking the Net Profit of the trade and dividing it by the Total Initial Cost (which includes the purchase price of the shares plus any buy-side commissions). You then multiply that decimal by 100 to get the percentage. Formula: (Net Profit / Total Investment) × 100.
Net Profit
+$3,550.00
Return on Investment
23.67%
Break-Even Price
$150.00
Buy Parameters
Sell Parameters
Value Comparison
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The Danger of Hidden Fees
Many modern brokerage apps like Robinhood or Webull advertise "zero-commission" trading. While it's true there are no direct transaction fees, many active traders still rack up hidden costs like SEC regulatory fees, margin interest, or options contract fees.
If a day trader purchases 10,000 shares of a penny stock at $0.50, and their broker charges a standard $4.95 fee on both the buy and sell side, their true break-even price is slightly above $0.50. If they sell exactly at $0.50, they will actually lose $9.90. Our calculator prevents this math trap by explicitly calculating the break-even variable.
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Frequently Asked Questions
How do you calculate profit on a stock trade?
Stock profit is calculated by subtracting your total purchase cost from your total selling value. You must include the price per share multiplied by the number of shares, and then subtract any broker commissions on the buy and sell sides.
What is Return on Investment (ROI)?
Return on Investment (ROI) is a percentage that compares how much profit you made relative to how much money you had to risk. A $100 profit on a $10 investment is an incredible 1,000% ROI. A $100 profit on a $100,000 investment is a terrible 0.1% ROI.
What does "Break-Even Price" mean?
The break-even price is the exact share price you need to sell your stock at to net exactly $0 in profit or loss. Most beginner traders do not account for trading fees; because of commissions, your break-even price is actually slightly higher than your original purchase price.
Does this calculator work for cryptocurrency?
Yes! The math for stock trading and cryptocurrency trading is identical. Simply input the number of coins instead of shares, and the buy/sell prices per coin.