Privacy
Privacy policy
Last updated: September 2026
We collect as little as we can get away with, and we do not sell personal information.
What our tools collect
Calculator inputs are processed in your browser. When you type figures into a tool on this site, those values are used to render your result and are not transmitted to us or stored on our servers.
Analytics
We use privacy-respecting analytics to understand which pages are useful — aggregate counts of page views, referring sites, and general country-level location. We do not build advertising profiles of individual visitors.
If you subscribe, we store the address you give us and use it to send what you signed up for. We do not sell or rent it. Every email includes an unsubscribe link, and unsubscribing removes you from the list.
Affiliate and referral links
Some outbound links are affiliate or referral links. When you follow one, the destination company may set a cookie to attribute the referral to us. That happens on their side, under their privacy policy, not ours. See our disclosure for how this works commercially.
Cookies
We aim to run without advertising or tracking cookies of our own. Where a cookie is required — for example to remember a preference you set — it is limited to that purpose. Your browser can block or clear cookies at any time; our tools are built to work without them.
Your choices
Depending on where you live, you may have the right to request access to, correction of, or deletion of personal information we hold about you, and to opt out of its sale — which is straightforward here, because we do not sell it. To make a request, contact us and we will act on it.
Children
This site is intended for adults making purchasing decisions. We do not knowingly collect personal information from children.
Changes
If this policy changes materially, we will update the date at the top and describe what changed.