Profit and Loss Percentage Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the cost price and the selling price.
- Read the profit or loss and the percentage.
How it works
Profit (or loss) = selling − cost; the percentage is that difference ÷ cost × 100.
Worked example
Cost $100, sell $120. Profit $20 — a 20% gain.
Common mistakes
- Dividing by the selling price — profit/loss percent is based on cost.
- Forgetting fees and other costs that eat into real profit.
Frequently asked questions
Is this the same as margin?
No — this is profit as a percentage of cost (markup). Margin is profit as a percentage of the selling price.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.