Privacy, plainly.
Last updated 3 October 2026
Your numbers stay on your device
Every calculator on Percent runs as JavaScript in your browser. The numbers you type are never sent to a server, so we can’t see them, store them or share them.
What’s saved in your browser
Your theme and digit-grouping choices are kept in your browser’s local storage so they’re still there next time. They never leave your device. On a calculator’s own page, the numbers you type also appear in the address bar so you can share a link. Typing doesn’t send anything; only when someone opens a shared link does that address reach our static host, like any web address would.
No accounts, ads or trackers
There’s nothing to sign up for, and the site loads no advertising or tracking scripts.
Contact
Questions? Email percent@itskk.in.