CalcBeacon tool

Profit Margin Calculator

Calculate profit, markup and margin from selling price and cost.

Quick Guide

Quick answer

Profit Margin Calculator: Profit Margin Calculator helps turn ecommerce profit inputs into a clear result you can compare, explain, and use for a practical decision.

Formula / core ruleProfit margin = (profit ÷ revenue) × 100

This section explains the main calculation rule in a simple and practical way.

ExampleIf revenue is £100 and profit is £30, margin is 30%.

Use this example to better understand how the calculation works.

Common mistakeConfusing margin with markup. Margin uses revenue as the denominator.

Checking this point reduces the chance of a misleading result.

How to interpret the result

Margin shows what percentage of sales remains after the selected costs.

Methodology

This calculator reads the visible input fields, applies the arithmetic for profit margin calculator, and displays the result immediately in the result panel. The page keeps the answer, formula, example and explanation together so the calculation is easier to verify and easier for search systems to understand.

Reviewed by CalcBeacon Editorial TeamUpdated May 2026Category: Ecommerce ProfitTransparent formula and example

Calculator

Use the profit margin calculator

Calculate profit, markup and margin from selling price and cost.

Selling price

Cost

Result: waiting for input

Enter your values to see the result.

How it works

Formula

Margin = profit ÷ price, markup = profit ÷ cost

Example

If a product costs £20 and sells for £30, profit is £10, margin is 33.33%, markup is 50%.

Practical Guide

Understanding the result

Financial calculators help estimate costs, payments, taxes, savings, and profitability. They are useful for budgeting, planning, and comparing financial decisions.

What the result means

Financial results should always be reviewed together with personal circumstances, tax rules, and long-term affordability.

Typical considerations

Lower debt costs are generally preferable
Emergency savings improve financial stability
Tax rates and deductions may change over time

Example

Try adjusting one financial assumption at a time to compare different budgeting or payment scenarios.

Common mistakes

Ignoring hidden costs or fees
Forgetting taxes or deductions
Using unrealistic assumptions

Frequently asked questions

What is the difference between margin and markup?

Margin compares profit to selling price. Markup compares profit to cost.

Is this good for ecommerce?

Yes. It is especially useful for product pricing.

Tool guide

How to use the profit margin calculator

Calculate profit, markup and margin from selling price and cost. Use this page for a fast estimate, compare a few scenarios, and adjust the inputs until the result matches what you need to decide.

This tool also sits inside the CalcBeacon ecommerce and profit cluster. That makes it easier to find from category pages, related tools, and supporting guides when you want to compare options.

When it is usefulUse this tool when you want a fast estimate, want to compare options, or want a clearer answer before moving on.

Common mistakesCheck that your numbers use the same units, avoid leaving key fields blank, and test a second scenario so you can see how sensitive the final result is.

Next useful stepAfter using this page, compare the result with a related calculator or open the guide to check the number in context.

Related tools

Use these related tools to compare nearby calculations and move to the next step faster.