Profit percentage calculator
Profit Percentage Calculator
Enter the cost price and selling price to measure profit or loss as a percentage of cost. This is useful when both prices are already known and you want to evaluate the result.
Profit percentage
25%
Selling at 100 on a cost of 80 creates 20 profit, which is 25% of cost.
Profit amount
20
Selling price
100
How it works
Measure the result against cost
Profit percentage starts with two known prices. It finds the difference between selling price and cost, then compares that profit or loss with the original cost.
Formula
profit percentage = ((selling price - cost) ÷ cost) × 100
A selling price below cost produces a loss. The calculator presents the loss percentage as a positive magnitude and labels it clearly as a loss.
Worked example
- 1. Start with a cost of 80 and a selling price of 100.
- 2. Find the difference to get 20 profit.
- 3. Divide 20 by 80 to get 0.25.
- 4. Multiply 0.25 by 100 to get 25% profit.
Choose the right business percentage
- Profit percentage: measure a known profit or loss against cost.
- Markup: choose a percentage to add on top of cost.
- Margin: measure profit as a percentage of selling price.
Related calculators
Continue through the business percentage tools
Profit percentage, markup, and margin use closely related numbers but answer different questions. Choose the next tool based on whether you are evaluating known prices, setting a new price, or measuring profit against revenue.
Different baseline
Margin Calculator
Measure profit as a percentage of selling price instead of cost.
Set a price
Markup Calculator
Start with cost and a desired markup percentage to calculate the selling price.
General comparison
Percentage Change Calculator
Compare two values using the original value as the baseline.
Price reduction
Discount Calculator
Calculate savings and final price after reducing a price by a percentage.