Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to plain text.
How to use Base64 Encode / Decode
Three quick steps — no sign-up needed
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Step 1
Choose Encode or Decode
Select Encode to turn text into Base64, or Decode to reverse it.
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Step 2
Paste your input
Enter plain text for encoding or a Base64 string for decoding.
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Step 3
Copy the output
Read the result and copy it into configs, tokens, or data URLs as needed.
About Base64 Encode / Decode
Base64 Encode / Decode converts between plain text and Base64, the encoding used in data URLs, basic auth headers, and many APIs. Developers searching "Base64 encode online" or "Base64 decode" need a quick browser tool without spinning up a terminal.
Choose Encode or Decode, paste input, and copy the output. Encoding is not encryption - anyone can decode Base64. Do not treat it as a way to hide secrets.
Padding (=) and URL-safe variants can differ between systems. If a decoded string looks wrong, check character set and whether the source used standard or URL-safe Base64.
Utility for development and debugging - not a cryptographic vault.
Benefits of Base64 Encode / Decode
Frequently asked questions
Is Base64 encryption?
No - it is encoding. Anyone can decode it.
Why do I see = at the end?
Padding characters are normal in standard Base64.
Can it encode binary files?
This page focuses on text; binary may need a file-oriented encoder.
Why did decode fail?
Invalid characters, truncated strings, or wrong variant (URL-safe vs standard) are common causes.
Is data sent to a server?
Prefer tools that process in the browser for sensitive strings; follow the site privacy notes.