Privacy Policy

Last updated: October 10, 2026

This policy explains how Duct Chart ("we", "us") handles information when you use https://ductchart.com (the "site").

What you type into the tools

The airflow, sizes and other numbers you enter are worked out in your browser and are not sent to us. The site does not save your entries in your browser.

Information collected automatically

Our hosting provider (Cloudflare) processes standard technical data, such as IP address, browser type and the pages requested, to deliver and protect the site. We may use Cloudflare Web Analytics to count visits. It does not use cookies and does not track you across other sites.

Advertising and cookies (Google AdSense)

There are no ads on the site yet. We plan to show ads from Google AdSense. When ads are switched on:

• Google and its partners may use cookies or similar technology to show ads based on your visits to this and other websites, and to measure ads.
• You can turn off personalized ads in Google Ads Settings, and read how Google uses information from sites that use its services.
• Visitors in the European Economic Area, the UK and Switzerland will be asked for consent before advertising cookies are used.

We will update this policy when ads go live.

Affiliate links

We may add affiliate links, for example to tools on Amazon. If you buy through one we may earn a commission at no extra cost to you. As an Amazon Associate we earn from qualifying purchases. Affiliate links will be labeled.

Children

The site is intended for trade professionals and adults and is not directed at children under 13.

Changes

We may update this policy. The date at the top shows the latest version.

Contact

Questions about privacy: [email protected].