Privacy policy

Visiting

Crypto Fee Calculator sets no tracking cookies. If analytics are switched on, we use a self-hosted Umami instance, which counts page views without cookies and honours Do Not Track. The calculators run in your browser; what you type into them is not sent to us. The one exception is a Bitcoin transaction id you ask the stuck-transaction page to look up: it is sent to our data hub, which asks a public Bitcoin API once and keeps the answer in a short memory cache; it is not written to disk or logged. The contact form is rate-limited with a one-way, salted hash of your IP address; the address itself is not stored. The theme button remembers your choice of light or dark in your browser's local storage; nothing about it is sent to us.

Contact form

When you write to us we store your name, email address, subject and message so we can answer, and forward them to our own inbox. We do not store your IP address — only a one-way, salted hash of it, kept to stop spam. We never sell or share messages.

Admin

The only cookie is the site owner's admin session, set when the owner signs in.

Questions

Write to contact@cryptofeecalculator.xyz.