Convert text to Base64 or decode Base64 back to plain text.
Base64 is a way of encoding binary data (or plain text) into a string made up only of letters, numbers, and a few symbols, so it can be safely transmitted through systems that only handle plain text — email attachments, embedding images directly inside CSS or HTML, or passing data through APIs and URLs where raw binary would break things. Despite the name, Base64 is not encryption; it doesn't hide or protect information, it just re-represents it in a different, text-safe format.
Developers run into Base64 constantly: decoding a JWT token's payload to inspect its claims, embedding a small image directly into a stylesheet as a data URI, or converting an API response that arrives Base64-encoded back into readable text. This tool handles both directions instantly in the browser.
Paste your plain text into the input box to get its Base64-encoded version, or paste a Base64 string into the decode field to convert it back to readable text. The conversion happens instantly as you type, and both fields support copying the result with one click.
No. Base64 is an encoding scheme, not encryption — anyone can decode a Base64 string back to its original form with no key or password required. It shouldn't be used to protect sensitive data.
The equals signs are padding characters, added when the original data length isn't a multiple of three bytes. They're a normal part of the format and don't indicate an error.
Yes — this tool handles Unicode text correctly, including accented characters and emoji, by encoding the underlying UTF-8 bytes.
Some systems (like certain APIs, URLs, or older email protocols) can't reliably handle raw binary data or special characters, so encoding it as Base64 text avoids corruption or errors during transmission.
Yes, as long as it's standard Base64. If a string uses a URL-safe variant (with - and _ instead of + and /), you may need to convert those characters back first.