Privacy by design

Your calculation stays in your browser

Margin Calculator works without an account. The values you type are calculated on your device rather than submitted to this site.

No accountNo calculation storageNo currency conversion request

Processed locallyCost, selling price, profit, margin and markup

Shared only by youValues enter a URL only when you copy a calculation link

Standard hosting dataTechnical request information may be processed to deliver the site

Calculator inputs

Cost, selling price, profit, margin and markup values are processed locally in your browser. This site does not create an account for you or store those calculation values in a user profile.

Calculation links and exports

If you choose Copy calculation link, the two values you supplied and your currency choice are intentionally added to the URL. Anyone who receives that link can read those values. Bulk CSV files and print-to-PDF output are generated through your browser when you request them.

Currency selection

Your selected currency changes the symbol and local number formatting during the current visit. It does not trigger a foreign exchange request or convert the amounts.

Hosting data

Like most websites, the hosting service may process standard technical information needed to deliver the page securely, such as IP address, browser details and request logs.

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Policy date

Last updated August 12, 2026. This page is revised when the calculator’s data handling changes.