Cookie policy
Last updated
This site uses few cookies. Google Analytics uses cookies for visitors outside the EEA, the UK and Switzerland. There are no advertising cookies today. The calculators remember your inputs using your browser’s local storage, which stays on your device and is never sent to us.
What the site stores instead
- Local storage: your last inputs, your saved calculations and your theme choice. The privacy policy lists each item.
- Offline copies: pages and files stored by your browser so the calculators work without a connection.
You can clear all of this at any time in your browser settings, under site data.
Visitor statistics
- Vercel Web Analytics and Speed Insights never set cookies.
- Google Analytics, outside the EEA, the UK and Switzerland, sets these cookies to count visits and tell new visitors from returning ones:
| Cookie | Set by | What it’s for | Kept for |
|---|---|---|---|
_ga |
Google Analytics | A random ID that tells visitors apart | 2 years |
_ga_<ID> |
Google Analytics | Keeps track of your current visit | 2 years |
- In the EEA, the UK and Switzerland, Google Analytics sets no cookies. It only sends anonymous pings.
- To opt out anywhere, block cookies for this site in your browser or use Google’s opt-out add-on.
Security cookie
Our host, Vercel, may set a short-lived security cookie if it needs to check that a visitor is not a bot. It is used only to protect the site.
If ads are added
The site shows no ads today. When we turn ads on, Google AdSense will serve them:
- In the European Economic Area, the UK and Switzerland, Google’s consent banner asks you before any advertising cookie is set. Google’s consent tool then stores your choice in its own cookies (such as
FCCDCFandFCNEC). - If you accept, Google may set advertising cookies (such as
__gads,__gpiandIDE), and Google Analytics may set its_gacookies. - Elsewhere, Google may set advertising cookies without asking first. You can turn off personalized ads in Google’s ad settings or block cookies in your browser.
We will update this page, with the full list, on the day ads go live.
Site editors
The site’s editing area uses sign-in cookies. They apply only to the people who edit the site, never to visitors.