About Brimline
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Brimline is a free online crypto profit and average cost calculator. We built it to give a clear answer in seconds, without sign-up, pop-ups or clutter.
How it works
Every calculation runs directly in your browser. The numbers you type are not sent to us or stored on a server, so the tool also keeps working on a slow connection once the page has loaded.
Accuracy
We check the formulas against standard references and test the results with real examples. Still, results are estimates for information only. Results are estimates for information only. They are not financial, investment or tax advice. Crypto assets are volatile and you can lose money.
Languages
The site is available in English, German, Dutch, French, Swedish, Norwegian, Danish, Spanish, Japanese and Korean. Number formats, decimal separators and default units follow the language you choose.
Feedback
Spotted an error or missing a feature? See the contact page. Corrections are applied to all language versions.