Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 back to plain text.


    

  

  

    
    
    
    
  

  


    

    

      
ToolsSoup's Base64 Encoder/Decoder is a free online tool that converts text to Base64 and decodes Base64 back to readable text instantly in your browser. It is fully Unicode-aware, so emojis and accented characters round-trip perfectly — no uploads, no sign-up, and nothing ever leaves your device.

      

        
What is Base64 encoding?

        
Base64 is a way of representing binary or text data using only 64 printable ASCII characters (A–Z, a–z, 0–9, plus + and /). It is designed to move data safely through systems that were built for text, such as email, JSON payloads, data URLs, and HTTP headers. Encoding does not compress or protect your data — it simply repackages it into a format that survives transport without corruption.

        
      

      

        
How to encode and decode Base64 online

        
Converting data with ToolsSoup takes just a few seconds:

        
  1. Type or paste your text or Base64 string into the input box.
  2. Click Encode to turn text into Base64, or Decode to turn Base64 back into text.
  3. Copy the result with one click, or read the error message if the input is not valid Base64.

      

      

        
Is Base64 the same as encryption?

        
No. Base64 is encoding, not encryption. Anyone can decode a Base64 string back to its original content with no key or password, so it offers no security or privacy on its own. Use it to transport or embed data — never to protect secrets. For sensitive information, encrypt the data first and then Base64-encode the ciphertext if you need a text-safe representation.

        
      

      

        
Why use this Base64 tool?

        
  • 100% free with no ads, sign-up, or usage limits.
  • Runs entirely in your browser — your data is never uploaded to a server.
  • Full Unicode (UTF-8) support, so accents and emoji encode and decode correctly.
  • Encode and decode from a single page with one click.
  • Works offline once the page has loaded.

      

      

        
Frequently asked questions

        

          
Is this Base64 encoder free?

          
Yes. Every tool on ToolsSoup is completely free to use, with no account, sign-up, or hidden limits.

        

        

          
Is my data safe?

          
Absolutely. All encoding and decoding happens locally in your browser using JavaScript, so your text is never sent to or stored on any server.

        

        

          
Is Base64 encryption or secure?

          
No. Base64 is an encoding, not encryption. Anyone can decode it without a password, so it should never be used to hide or protect sensitive information.

        

        

          
Why is my Base64 result longer than the original text?

          
Base64 represents every 3 bytes of data with 4 characters, so the encoded output is roughly 33% larger than the input. That overhead is the cost of making binary data safe to transport as text.

        

        

          
Why am I getting an 'Invalid Base64' error when decoding?

          
Decoding only works on valid Base64. Common causes are missing or extra padding characters (=), stray characters that are not part of the Base64 alphabet, or accidentally trying to decode plain text. Check the input and try again.