Draft pending legal review. This policy is written to be accurate about what the site actually does, but it has not been reviewed by a lawyer and the operating entity’s details are not yet filled in. It must be reviewed and completed before the site is published publicly.
Last updated: [date] · Operated by: [legal entity name], [registered address], [contact email].
The short version
The calculators run entirely in your browser. The numbers you type are never sent to us and never stored anywhere. Everything below is about the rest of the site.
What the calculators do with your input
Nothing leaves your device. A calculation happens in JavaScript in your browser, and no value you enter is transmitted to our servers, logged, or saved. If you use a share link, your values are encoded into the link itself — we do not store them, which is also why such links never expire.
What we collect
- Server logs. Our host records the usual: IP address, browser, the page requested and the time. Used for security and diagnosing faults, retained for [retention period].
- Account details, if you create an account: your email address and a hashed password. We never store a password in a readable form.
- Messages you send us through the contact form: your name, email address and what you wrote, so we can reply.
- Analytics, only if you accept optional cookies. Aggregate page usage, not identifiable to you by us.
What we do not collect
The values you enter into any calculator. We do not sell personal data, and we do not share it with anyone except the processors listed below.
Cookies
| Cookie | Purpose | Optional? |
|---|---|---|
calc_consent |
Remembers your cookie choice for six months. | No — set only once you choose |
| WordPress session cookies | Keeps you signed in, if you have an account. | No — only set when you sign in |
| Advertising cookies | Set by Google AdSense to select and measure ads. | Yes |
| Analytics cookies | Set by Google Analytics to count page usage. | Yes |
Optional cookies are not set, and the scripts that set them are not loaded, until you press Accept. If you press Reject, those scripts never run and no request is made to them. You can change your choice at any time with the Cookie settings link in the footer.
Processors we use
- Google AdSense — advertising, only after consent. Google privacy policy.
- Google Analytics — usage measurement, only after consent.
- [Hosting provider] — server logs and site hosting.
- [Email provider] — delivering account and contact emails.
Your rights
If you are in the UK, EU or another region with equivalent law, you can ask us to give you a copy of your personal data, correct it, delete it, or stop processing it. Write to [contact email] and we will respond within one month.
Deleting your account removes your email address, your password hash and your saved favourites. Send the request from the address on the account so we can be sure it is you.
Children
This site is not directed at children under [age], and we do not knowingly collect their personal data.
Changes
If this policy changes materially we will update the date at the top and, where the change affects consent, ask again.