A cookie is a small file a website stores in your browser. This page lists every cookie we set and why.
Necessary cookies — always on
These make the site work. They cannot be switched off, and they do not track you across other websites.
| Cookie | Purpose | Duration |
|---|---|---|
| session | Keeps you signed in and protects forms against cross-site request forgery | Until browser closes, or 2 hours idle |
| XSRF-TOKEN | Security token that stops other sites submitting forms on your behalf | Session |
| locale | Remembers whether you chose English, Hindi or Hinglish | 1 year |
| consent | Remembers your choice on this page, so we stop asking | 6 months |
Advertising cookies — only with your consent
If you accept, third-party advertising networks may set cookies to measure whether an advertisement was seen or clicked, and to limit how often you see the same one.
If you decline, none of these are set. You will still see advertising, but it will be non-personalised. The site works identically either way.
What we store in your browser without cookies
Your theme choice (light, dark or system) is stored in your browser's local storage, not in a cookie. It never leaves your device unless you are signed in and have asked us to remember it.
Changing your mind
Clear cookies for this site in your browser settings and the consent banner will appear again on your next visit. You can also block or delete cookies entirely in your browser — the calculators will continue to work.
Questions
Last updated: 20 August 2026