Last updated: 10 October 2026.
What you type stays in your browser
All calculations happen on your device. The amounts, rates and invoice details you enter are not sent to this site or to anyone else. There are no accounts and no sign-up.
What is stored on your device
The site saves two things in your browser's local storage so they are there next time:
- the currency you last picked in a calculator
- a draft of your invoice in the invoice generator
Both stay on your device. You can delete the invoice draft with the Start blank button, or delete everything by clearing this site's data in your browser settings.
Cookies, analytics and advertising
This site does not currently set cookies, run analytics or show advertising. If that changes, this page will be updated before it does.
Third parties
- Fonts. The typefaces are served from this site, not from Google Fonts or any other font service. Loading a page sends no requests to anyone but the host.
- Hosting. The site is hosted by Cloudflare, which also runs the site's DNS. As with any website, Cloudflare may keep standard server logs of requests, such as IP address, time and the page requested. See Cloudflare's privacy policy.
- Email. Email you send to the contact address is forwarded by Cloudflare to a Gmail inbox, so Cloudflare and Google handle it as email providers.
- Links. Pages link to official sources such as GOV.UK and the ATO. Those sites have their own privacy policies.
Contact
Email: hello@kindmargin.com