Last updated: 8/3/2026
Overview
JoistCalc ("we," "us," "the site") provides free construction calculators. This policy explains what information is collected when you visit, how it's used, and your choices.
Information we collect
The calculators on this site run entirely in your browser — the numbers you enter into a calculator (measurements, materials, etc.) are not sent to or stored on our servers. We do not require an account, login, or any personal information to use the calculators.
Like most websites, we may automatically collect limited technical information through server logs and analytics tools, such as:
- Pages visited and time spent on the site
- Browser type, device type, and approximate location (city/region level, from IP address)
- Referring website or search terms that led you here
Cookies and advertising
This site is supported by advertising, including Google AdSense. Google and its advertising partners use cookies (including the DoubleClick DART cookie) to serve ads based on your visits to this site and other sites on the internet.
- Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this site and/or other sites.
- You may opt out of personalized advertising by visiting Google Ads Settings.
- You can also learn more about how Google uses data from sites that use its services at policies.google.com/technologies/ads.
- Third-party vendors, including Google, may use cookies to serve ads based on your prior visits to this or other websites.
We may also use analytics tools (such as Google Analytics) that use cookies to help us understand how visitors use the site in aggregate. This data is not used to personally identify you.
Children's privacy
This site is not directed at children under 13, and we do not knowingly collect personal information from children under 13. If you believe a child has provided us information, contact us and we will remove it.
Data security
Because the calculators run locally in your browser and we don't collect account data, there is minimal personal data on our end to secure. Any technical/analytics data collected by third-party tools is handled according to those providers' own security practices.
Your choices
You can disable cookies in your browser settings, use the Google Ads Settings link above to limit ad personalization, or use browser extensions that block tracking — though this may affect how ads and some site features display.
Changes to this policy
We may update this policy from time to time. Changes will be posted on this page with an updated "Last updated" date.
Contact us
Questions about this policy? Email webdev08@protonmail.com.