Base64 Encoder and Decoder
Encode text to Base64 or decode Base64 back to plain text. Free to use, no signup required for occasional use.
What is the Base64 Encoder/Decoder?
The Base64 Encoder/Decoder is a free, dedicated online tool for converting plain text into Base64 and back again. Base64 is an encoding scheme that represents binary or text data using a set of 64 printable ASCII characters, which makes it safe to embed inside JSON payloads, email attachments (MIME), authentication headers, data URIs for images, and other places where raw binary or special characters aren't reliably supported. Developers and QA engineers regularly need to quickly encode a string before sending it in a request, or decode a Base64 value they've received to inspect what it actually contains — for example, decoding the payload of a JWT segment or a Basic Auth header during debugging. Rather than writing a one-off script or opening a terminal, this tool provides an instant, browser-based toggle between encoding and decoding. It exists as its own standalone page (separate from other text-encoding tools) so it's fast to find, bookmark, and link to whenever Base64 specifically is what you need, without wading through unrelated encoding formats.
How to use it
Choose whether you want to Encode (turn plain text into Base64) or Decode (turn a Base64 string back into plain text) using the toggle at the top. Paste your input into the text box — plain text for encoding, or a Base64 string for decoding — then click the convert button. The result appears instantly below, ready to copy with the copy button. If you need to go the other direction, just switch the toggle and paste in new input; there's no page reload or extra setup required. This is useful for quickly checking what a Base64-encoded API token, cookie value, or data URI actually contains, or for preparing a Base64 string to embed in HTML, CSS, or a JSON payload during development.
Frequently asked questions
Is Base64 encoding the same as encryption?
No. Base64 is an encoding format, not encryption — anyone can decode it. Don't use it to protect sensitive secrets like passwords or private tokens.
Can this tool decode a Base64 string that was encoded elsewhere?
Yes, as long as it's valid, standard Base64, you can paste it into Decode mode and get back the original text.
Does it handle special characters and non-English text?
Yes, both encoding and decoding correctly handle Unicode text, including special characters and non-English scripts.
How is this different from the general Text Encoder/Decoder tool?
This page is a dedicated, Base64-only version of that same functionality, kept as its own tool for quicker access when Base64 is specifically what you need.