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    Privacy policy

    Last updated: 9 October 2026

    Zulu Calculator (zulucalculator.com) is a free calculator website run by AlphaZulu LLC. This policy explains what data is used when you visit and the choices you have.

    Your calculations

    Calculations run entirely in your browser. The numbers you type are not sent to us or stored on our servers. If you use Share result, your numbers are placed in the link itself, and only the people you send it to will see them.

    Things saved on your device

    We use your browser's local storage to remember your light or dark mode choice, your preferred currency, your favourite calculators, the calculators you used recently and any "Did this help?" answer. This stays on your device and is not sent to us. You can clear it at any time in your browser settings.

    Advertising

    We show ads to keep the site free. Ads are served by Google AdSense, a service of Google LLC.

    • Google and its partners use cookies and similar technologies to serve ads based on your previous visits to this and other websites, and to measure how ads perform.
    • Google's use of advertising cookies lets it and its partners serve ads based on your visits to this site and other sites on the internet.
    • Third-party vendors and ad networks may also serve ads through AdSense and use cookies for the same purposes. You can see the list of vendors in the consent message described below.

    You can learn more in how Google uses information from sites that use its services.

    Your choices

    • Visitors in the European Economic Area, the UK and Switzerland see a consent message from Google, a certified consent management platform, the first time they visit. You can accept, refuse or choose which purposes and partners to allow. You can change your choice at any time with , also linked at the bottom of every page.
    • Personalised ads: you can turn off ads based on your interests in Google's ad settings, or opt out of many third-party vendors at aboutads.info (US) and youronlinechoices.eu (Europe).
    • US state privacy laws: where they apply, Google may show an opt-out message for the "sale" or "sharing" of personal information for advertising, and honours Global Privacy Control signals sent by your browser.
    • Cookies in general: you can block or delete cookies in your browser settings. The calculators still work without them.

    Other services we use

    • Cloudflare hosts the site and may process technical data such as IP addresses to deliver pages and protect against abuse.
    • Google Fonts supplies the site's typefaces. Your browser requests them from Google's servers.

    Children

    The site is for a general audience and is not directed at children under 13. We do not knowingly collect personal information from children.

    Changes

    If we change how data is used, we will update this page and the date at the top.

    Contact

    Questions about privacy: hello@zulucalculator.com.