Privacy

The short version: we do not store the numbers you type, we run no advertising trackers, and we never ask you to sign up. Calculations happen on your device. This page explains the details.

What you enter into calculators

Every calculator computes locally in your browser. The values you enter are never sent to our servers or stored on them. They stay on your device and clear when you close or reload the tab, unless your browser saves them in local storage (see below).

Local storage

To make the site behave consistently, we keep a small amount of data in your browser using local storage. This includes your preferred unit system (imperial or metric) and the last values you entered into individual calculators, so a tool looks the same when you return. This data lives only in your browser. You can clear it any time through your browser settings.

Analytics

We use Vercel Analytics to understand which calculators get used and how fast pages load. It collects aggregated, anonymized measurements, such as page views and Web Vitals performance, without cookies and without identifying you. We do not build user profiles and we do not sell data.

Cookies

Calcoid sets no advertising cookies and no third-party tracking cookies. Our analytics is cookieless. The only data we keep on your device is the local storage described above.

Hosting and third parties

The site is hosted on Vercel, which processes standard request information (such as your IP address) to deliver pages and protect the service, as any web host does. Vercel also provides the analytics above. We use no other third-party services for tracking or advertising.

Children

Calcoid is a general-audience tool and is not directed at children. We do not knowingly collect personal information from anyone, including children.

Visitors outside the United States

Calcoid is available worldwide. Because we store no personal data and run no tracking, the same privacy approach applies wherever you visit from.

Changes

If this policy changes, we update the date at the top of this page. Significant changes will be reflected here.

Contact

Questions about privacy? Email hello@calcoid.com.