Privacy policy

Last updated: October 28, 2026

The short version

I developed this website myself, and I collect no personal data from you. No sign-up form exists on this site. No account exists on this site. The calculators and converters run inside your own browser, and the numbers you type into a tool never travel to a server of mine. The one exception on this page concerns advertising: this website shows ads through Google AdSense, and Google may use cookies to serve and measure those ads.

Who runs this website

Talha Kayani owns and develops ti-84calculator.com. Questions about this policy go to contact@ti-84calculator.com, and I answer those emails myself.

Information this website does not collect

  • Names, email addresses, phone numbers, or postal addresses through any form on the site itself
  • The values you enter into any calculator, converter, or estimator on this site
  • Payment information of any kind; this website sells nothing
  • Location data beyond the general region a standard web server log records for security

Information a web server records by default

Every web host keeps basic server logs. A log entry records an IP address, the page requested, the browser type, and the time of the request. Hosts keep these logs to stop attacks and to fix errors. I use the logs for those two purposes only, and I never sell log data or share it for marketing.

Cookies on this website

This website sets no cookies of its own for tracking. Two cookie sources can still appear during a visit:

  1. Essential cookies. The hosting platform may set a short-lived cookie that keeps the site secure and balanced across servers.
  2. Google AdSense cookies. Google and its partners may set cookies to serve ads based on your earlier visits to this site and other sites. Google explains its cookie use here: How Google uses cookies. Google also describes how it uses information from sites that run its services here: How Google uses information from sites or apps that use our services.

Your choices with advertising cookies

You control advertising cookies from your own side. Google offers opt-out controls for personalized ads at Google Ads Settings. Your browser settings also let you block or delete cookies at any time. Blocking cookies never blocks a tool on this site; every calculator keeps working without cookies.

Analytics

Standard, privacy-respecting traffic counts may record that a page received a visit. A visit count records a page view, not a person. No analytics data on this site carries a name, an email address, or a tool input.

Email you send to us

An email you send to contact@ti-84calculator.com reaches my inbox with the address and content you chose to send. I use that email to reply to you. I never add your address to a marketing list, and I never sell or share it.

Children

The tools on this site suit a general audience, and several tools serve students directly. The site requests no personal information from any visitor, including children.

Changes to this policy

A change to this policy appears on this page with a new date at the top. A material change also receives a note on the homepage for at least thirty days.

Contact

Talha Kayani Owner and developer, ti-84calculator.com Email: contact@ti-84calculator.com