Privacy Policy

Every calculator on this site runs entirely on your device using JavaScript. The numbers, dates and options you enter are never sent to our servers, never written to a database and never shared with anyone.

• Anonymous error diagnostics. If a calculator receives an invalid input or throws an error, we log the calculator name, the field name, the field type and an error code — never the values you typed.
• Standard server logs. Our hosting provider records requests, including IP address, browser type and referring page, for security and abuse prevention.
• Messages you send us. If you use the contact form, we receive the name, email and message you provide, and use them only to reply.

We may display advertising supplied by third-party networks such as Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this or other websites.

• Google's use of advertising cookies enables it and its partners to serve ads to you.
• You can opt out of personalised advertising at Google Ads Settings, or opt out of third-party vendors at aboutads.info.

We use your browser's local storage for small preferences such as your light or dark theme choice, recent searches and whether you have dismissed the bookmark reminder. This data stays on your device and can be cleared at any time from your browser settings.

Global Calculator is a general-audience tool and is not directed to children under 13. We do not knowingly collect personal information from children.

Depending on where you live, you may have the right to access, correct or delete personal data we hold about you, or to object to its processing. Because we hold almost no personal data, most requests can be fulfilled immediately — contact us and we will help.

We may update this policy as the site evolves. Material changes will be reflected in the "last updated" date at the top of this page.