What you type stays with you
The calculators run in your browser. The measurements you enter are worked out on your device and are not sent to us.
A share link is the one exception, and it is yours to make: the address of a calculator carries its inputs, so that whoever opens the link sees the same result. If you send that link to someone, they see those measurements. So does our hosting provider, as part of the address requested, like any web address.
What is kept in your browser
The site sets no cookies. It keeps two things in your browser’s local storage, on your device only:
| Name | What it holds | How long |
|---|---|---|
diy.project | Your project list: the lines you added, their quantities and notes, and its name | Until you empty the list or clear the site’s data in your browser |
diy.units | The units you last chose: feet and inches, or metres | Until you clear the site’s data in your browser |
You can empty the list with “Empty the list” in My project. Clearing the site’s data in your browser removes both.
A project saved “as a file” is a file on your device. We never receive it.
Visit statistics
This site does not count visits. There is no analytics script on its pages.
Hosting
The site is served by Cloudflare. To deliver a page, Cloudflare’s servers process the request your browser makes, which includes your IP address, as any web server does. Cloudflare’s own privacy policy describes how long such data is kept.
Ads
There are no ads on the site today, and so no advertising cookies. If that changes, this page will say so first, and a banner will ask for your choice where the law requires it.
Questions
Write to hello@thediycalculator.com.
Updated . How we calculate. Found a mistake? Tell us.