CalcBeacon tool

Product Margin Calculator

Calculate gross profit, margin and markup from selling price and cost with a free online product margin calculator.

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Selling price (£)

Cost (£)

Gross profit

£0.00

Quick Guide

Quick answer

Product Margin Calculator: Product margin shows what percentage of a product selling price remains after product-related costs.

Formula / core ruleProduct margin = (selling price - product cost) ÷ selling price × 100

This section explains the rule behind the result in plain language.

ExampleIf a product sells for £50 and costs £30, product margin is (£20 ÷ £50) × 100 = 40%.

Use this example as a quick check on how the inputs affect the answer.

Common mistakeIgnoring selling costs such as platform fees, payment fees, shipping, packaging, discounts or refunds.

Checking this point helps prevent a misleading result.

How to interpret the result

Product margin is strongest when it is calculated after all realistic product-level costs, not just the supplier cost.

Methodology

This calculator compares selling price and product cost, then estimates the margin percentage left after costs.

Reviewed by CalcBeacon Editorial TeamCategory: Ecommerce ProfitTransparent formula and example

What this tool helps with

Use this margin calculator to understand how much profit is left after product cost.

How it works

How this calculator works

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

Method

Use the entered values to calculate the result instantly based on the values entered.

Example

Enter a practical example in each field, review the output, and adjust the inputs one at a time.

Practical Guide

Understanding the result

Ecommerce calculators help estimate platform fees, margins, shipping costs, and profitability for online selling businesses.

What the result means

Small changes in fees, pricing, or conversion rates can significantly affect ecommerce profitability over time.

Typical considerations

Healthy margins provide room for advertising and returns
Platform fees vary between marketplaces
Shipping costs can heavily affect profits

Example

Compare different selling prices and fee structures to find a more sustainable profit margin.

Common mistakes

Ignoring shipping and refund costs
Underpricing products
Focusing only on revenue instead of profit

Frequently asked questions

What is the difference between margin and markup?

Margin measures profit against selling price. Markup measures profit against cost.

Why is this important?

It helps with pricing, profitability and deciding whether a product has enough room for ads, fees and discounts.

Can I use this for ecommerce?

Yes. It is especially useful for stores, dropshipping, marketplaces and product-based businesses.

Tool guide

How to use the product margin calculator

Calculate gross profit, margin, and markup from price and cost. Use this page for a quick working answer, 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 quick working answer, 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.