Business calculator
Free Profit Margin Calculator
Calculate profit, profit margin, and markup from cost and selling price with a simple browser-based tool.
Profit Margin Calculator
Margin guidance
Profit margin tells you how much of the selling price remains after cost
Profit margin is one of the quickest ways to judge whether a selling price leaves enough room after cost. It is especially useful when you want to compare products, services, or pricing decisions on a percentage basis rather than only looking at raw profit dollars.
Profit formula
Profit equals selling price minus cost. That is the dollar amount you keep before broader overhead or tax considerations.
Margin formula
Profit margin equals profit divided by selling price, multiplied by 100.
Margin vs. markup
Margin is based on the selling price. Markup is based on the cost. They are related but not interchangeable.
Below-cost selling
If the selling price is lower than the cost, the result becomes a loss and the margin turns negative.
How to use this calculator
Enter cost and selling price, then review profit, margin, and markup together
- 1
Enter the cost
Use the direct cost that belongs to the item, service, or package you are reviewing.
- 2
Enter the selling price
Use the actual price you plan to charge or the amount you already charged.
- 3
Review the result
The calculator shows profit, profit margin, and markup so you can compare pricing from more than one angle.
What profit margin means
Profit margin shows the portion of a selling price left after the direct cost is covered. That makes it a useful measure when you want to judge pricing quality, compare offers, or see whether a service mix is healthy.
A higher margin does not automatically mean a better business decision, but it does tell you more of the selling price remains after cost.
Profit margin formula
This calculator uses the standard relationship: profit equals selling price minus cost, and profit margin equals profit divided by selling price times 100. It also shows markup as profit divided by cost times 100 so you can compare the two perspectives.
That side-by-side view matters because people often mix up margin and markup even though they answer different questions.
Gross profit vs. profit margin
Gross profit is the amount of money left after cost in currency terms. Profit margin turns that into a percentage of selling price. The dollar figure helps with cash impact. The percentage helps with comparison.
For example, two offers might both earn $200 of profit, but the one doing it on a $600 selling price has a much stronger margin than the one doing it on a $1,400 selling price.
Why margin matters in pricing
Margin helps you see whether your pricing leaves enough room to cover indirect expenses, errors, discounts, or future reinvestment. If the margin is thinner than expected, the business may still make sales while struggling financially.
That is why margin is often useful before sending a quote, setting a package price, or deciding whether to keep a service at its current rate.
Profit margin example
Cost: $80 Selling price: $125 Profit: $45 Profit margin: $45 / $125 x 100 = 36% Markup: $45 / $80 x 100 = 56.25% This is a good example of why margin and markup are not the same number even though they come from the same transaction.
Common mistakes to avoid
- Calling markup 'margin' and making pricing decisions from the wrong percentage.
- Ignoring the result when the selling price is close to or below cost.
- Comparing only raw profit dollars without checking the percentage efficiency of the price.
- Using incomplete cost inputs and assuming the margin is more accurate than the underlying data.
Frequently asked questions
Practical questions people ask about this tool
What is the difference between profit and profit margin?
Profit is the dollar amount left after cost. Profit margin is that profit expressed as a percentage of selling price.
Why does margin differ from markup?
Margin uses selling price as the base, while markup uses cost as the base.
What happens if I sell below cost?
The calculator will show a loss, and the resulting margin will be negative because the selling price does not cover the cost.
Can I use margin to compare offers?
Yes. Margin is often helpful when comparing the profitability of different products, services, or pricing options.
Related tools
Move from price analysis to actual selling documents
Markup Calculator
Compare margin with markup using the same pricing logic.
Invoice Generator
Turn a profitable sale into a clean final invoice.
Quote Generator
Use your pricing logic to build a customer-facing quote.
Hourly Rate Calculator
Estimate service pricing from the rate side as well.
Your generated document stays clean: no ads or forced watermark in the finished output. Use the tool first, then review the supporting guidance below only when you need the extra context.