Base64 Encoder / Decoder
Convert text or hex payloads to and from Base64 encoding standard directly in your browser.
Convert payload blocks to ASCII Base64 compliance or decode back locally
How to use this tool
What is Base64?
Base64 is an encoding scheme that represents binary data in an ASCII string format. It is commonly used to transfer files, keys, or binary packets safely over protocols that primarily support text (like HTTP or email).
How to Convert Base64
Input text blocks or base64 strings to execute conversions.
Select Action
Choose whether you want to Encode plain text into Base64, or Decode a Base64 string back to plain text.
Paste Input
Input your source text or encoded string. Decodings are automatically validated for correct base64 structure.
Format & Copy
View the formatted output and copy it to your clipboard.
Frequently Asked Questions
Understanding text encoding practices.
Does encoding encrypt my data?
No. Base64 is encoding, not encryption. It is a public algorithm designed to make data readable, not secret. Anyone can decode it easily.
What causes a padding error during decoding?
Base64 strings must have a length divisible by 4. If the source binary packet doesn’t end on a multiple, it is padded with = characters. Missing or corrupted padding causes decoding failures.
Privacy & Safety Policy
All tools run completely in your browser via client-side JavaScript. We do not upload your files, interest parameters, or JSON payloads to any server. Your data remains yours.