Privacy policy
Plain English summary of what the site does and does not do with your data. Last updated 2026-04-15.
What we do not collect
- We do not require accounts. There is no signup, no login, no profile.
- We do not collect or store the values you type into any calculator. Computation happens in your browser and is discarded when you close the tab.
- We do not upload files you process with our converters. File conversion runs entirely in your browser via WebAssembly. Your file never reaches our servers.
- We do not run a behavioral analytics provider that tracks you across sessions or pages. If we ever add analytics, this page will say so and describe the provider.
Advertising
Pages display ads from Google AdSense. AdSense may set cookies or use similar identifiers to personalize what you see and to measure ad performance. Google's use of advertising data is governed by Google's Privacy and Terms .
You can opt out of personalized advertising at Google Ads Settings. Opting out does not remove ads, only the personalization.
We do not enable Google's Auto Ads. Every ad placement on the site is manual, in a known location, with reserved dimensions. We will not place interstitial or popup ads.
Cookies
The site itself sets one piece of browser storage: a theme
value in localStorage remembering your light/dark/system
preference. This is set only when you change the theme using the toggle
in the header.
Cookies set by Google AdSense are described in the advertising section above and controlled through the AdSense links there.
Your rights
Under GDPR (EU/UK), CCPA (California), and similar laws elsewhere, you have the right to access, correct, delete, and restrict use of personal data we hold about you. Because we do not collect personal data through accounts or analytics, the only data we hold is whatever you send us in email correspondence. To request deletion of correspondence, contact us at the address on the contact page.
Children
The site is not directed at children under 13. We do not knowingly collect data from children under 13.
Changes to this policy
When this policy changes, the date at the top updates. Material changes will be announced on the homepage for at least 30 days.