Margin is the profit as a percentage of the selling price, while markup is the profit as a percentage of the cost. Example: If you buy a product for $50 and sell it for $100:

• Margin = (($100 -$50) / $100) × 100 = 50%
• Markup = (($100 -$50) / $50) × 100 = 100% Our tool automatically detects if you're confusing the two and warns you with a "markup trap" alert to prevent costly mistakes.

The formula for profit margin percentage is: Margin % = ((Selling Price - Cost) / Selling Price) × 100 In our tool:

1. Select "Calculate Margin %" mode.
2. Enter your Cost and Selling Price.
3. The tool instantly computes your margin and displays it alongside markup and profit.

A "good" margin varies by industry. Here are average gross margin benchmarks for 2026:

Yes! Use the "Find Selling Price" mode:

1. Enter your Cost (e.g., $50).
2. Enter your Desired Margin % (e.g., 30%).
3. The tool calculates the required selling price ($71.43 in this example). This is perfect for pricing new products or adjusting for profitability.

Use the "Find Cost" mode:

1. Enter your Selling Price (e.g., $100).
2. Enter your Margin % (e.g., 25%).
3. The tool calculates the maximum allowable cost ($75 in this example). This helps you determine if a supplier’s price fits your margin goals.

Markup % measures profit relative to cost:

• Markup % = ((Selling Price - Cost) / Cost) × 100 Margin % measures profit relative to selling price:
• Margin % = ((Selling Price - Cost) / Selling Price) × 100 Key Difference: Markup is always higher than margin for the same numbers. Example:
• Cost = $50, Selling Price =$100
• Markup = 100%
• Margin = 50% Our tool calculates both automatically, so you never have to guess.

No.

• This margin calculator runs 100% in your browser—no data is stored, sent to servers, or shared with third parties.
• It works offline after the initial page load.
• All calculations are performed locally on your device.

Currently, the tool supports single calculations at a time. However, you can: ✅ Quickly clear and re-enter values for multiple products. ✅ Copy results to a spreadsheet (e.g., Excel, Google Sheets) for bulk analysis. We’re planning to add a batch mode in future updates for comparing multiple products side-by-side.

A margin cannot exceed 100% because it represents profit as a percentage of the selling price. If you see this, you may have:

• Swapped cost and selling price (enter the higher number as selling price).
• Used markup instead of margin (our tool warns you about this).
• Entered a negative number (check your inputs). The tool validates all inputs and shows an error if the calculation is impossible.

Our calculator uses standard financial formulas and is 100% accurate for valid inputs.

• All calculations are performed using floating-point arithmetic (not rounded until display).
• Results are precise to two decimal places for currency.
• The tool is tested against industry-standard calculators (e.g., Calculator.net, Xero).