Last updated: July 21, 2026
Calculator-OK does not collect, store, or process any personal information. All calculations are performed directly in your browser using JavaScript. No data is sent to our servers. We do not require registration, login, or any form of account creation. You can use every calculator on this site without providing any personal data whatsoever.
Like most websites, our server automatically logs basic technical information for each request: your IP address, browser type, referring page, and the time of your visit. These logs are used solely for diagnosing technical issues and preventing abuse. They are retained for a maximum of 30 days and are never shared with third parties.
We do not use cookies for tracking or personalization. Third-party services such as Google AdSense may use cookies for ad personalization. Google's use of advertising cookies enables it and its partners to serve ads based on your prior visits to this and other websites. You can manage your cookie preferences through your browser settings. You can also opt out of personalized advertising by visiting Google Ads Settings or AboutAds.info.
This site may display advertisements through Google AdSense and other advertising networks. These third parties may use cookies, web beacons, or similar technologies to collect information about your browsing activity across different websites. We do not control these third-party technologies or how they may be used. If you have questions about an advertisement or the practices of a third-party advertiser, contact them directly.
Our site contains links to external websites, including links to other language versions of Calculator-OK hosted on subdomains. We are not responsible for the privacy practices, content, or security of those external sites. Clicking an external link is at your own discretion.
Calculator-OK does not knowingly collect any information from children under the age of 13. The site is designed as a general-audience educational tool and contains no content that would be inappropriate for minors.
We may update this privacy policy from time to time to reflect changes in our practices or for other operational, legal, or regulatory reasons. Changes will be posted on this page, and the "Last updated" date will be revised accordingly. Continued use of the site after changes are posted constitutes acceptance of the updated policy.
If you have questions about this privacy policy, contact us at our contact page or via email at contact@calculator-ok.com.