Privacy
My Very Calculator does not have user accounts and never sends the numbers
you type into a calculator to any server. All calculations happen locally in
your browser. The only things persisted in localStorage are your
dark-mode preference, your recently-used calculators, per-calculator history,
and a few small UI preferences (all namespaced under mvc-*).
How the site is funded
This site is free to use and is supported by advertising. Running ads, plus a small amount of usage analytics, is what keeps the calculators free, account-free, and free of paywalls.
Analytics (Google Analytics)
We use Google Analytics 4 (measurement ID G-BRDHZ6FMM4) to
understand which calculators are useful and which pages need work. Google
Analytics sets cookies in your browser and processes information such as
your IP address (truncated by Google), device type, approximate location,
referrer, and the pages you visit on this site. We do not link this data
to a personal profile and do not sell it.
To opt out, you can install the
Google Analytics opt-out browser add-on,
enable “Do Not Track” / “Global Privacy Control” in your browser, or use any
content-blocker that filters googletagmanager.com. The site
remains fully functional with analytics blocked.
Advertising
Where ads are shown, they are served by third-party ad networks that may set their own cookies and use device identifiers to show you relevant ads and measure ad performance. These networks operate under their own privacy policies. You can manage personalised-ad preferences at Google Ads Settings and YourAdChoices (US) or Your Online Choices (EU).
Other third parties
The site loads the Geist web font from Google Fonts and lazy-loads the Chart.js library from jsDelivr on the few calculators that render charts. Those providers may receive your IP address when their files are fetched. If you prefer to block them, the site falls back to a system font and charts simply don't render — the calculator itself still works.
Feedback & bug-report forms
When you submit the feedback or bug-report form, your message — and, if you provided one, your name and email — is sent to a Cloudflare Pages Function on this site and forwarded as an email to our inbox via Cloudflare Email Routing. The bug-report form additionally includes a small auto-attached environment block (browser user-agent, viewport size, language, current theme) so we can reproduce the issue; nothing else is collected, and you can see exactly what's sent by inspecting the form before submitting. We use that information only to reply, fix the bug, or act on the suggestion; we do not add you to any mailing list. If you'd rather not use the form, both pages offer a fallback that copies the message to your clipboard so you can email it yourself.
Your rights
If you are in the EU/UK, EEA, California, or another jurisdiction with data-protection laws, you have rights of access, correction, deletion, and objection over personal data processed about you. For data we control directly, contact us through the feedback page. For Google Analytics data, please use Google's tools linked above.
Changes
If we change how we collect data we will update this page. Last updated: 2026-06-05 (v4.7.4 — feedback & bug-report forms now submit directly via Cloudflare Email Routing).